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Showing newest 21 of 43 posts from September 2008. Show older posts
Showing newest 21 of 43 posts from September 2008. Show older posts

September 30, 2008

Mars lander finds minerals

NASA’s Phoenix spacecraft has discovered evidence of past water at its Martian landing site and spotted falling snow for the first time, scientists have reported.

Soil experiments revealed the presence of two minerals known to be formed in liquid water. Scientists identified the minerals as calcium carbonate, found in limestone and chalk, and sheet silicate.

But exactly how that happened remains a mystery. "It's really kind of all up in the air," said William Boynton, a mission scientist at the University of Arizona at Tucson, yesterday.

A laser aboard the Phoenix recently detected snow falling from clouds more than two miles above its home in the northern arctic plains. The snow disappeared before reaching the ground.

Phoenix landed in the Martian arctic plains in May on a three-month mission to study whether the environment could be friendly to microbial life. One of its biggest discoveries so far is confirming the presence of ice on the planet.

Scientists long suspected frozen water was buried in the northern plains based on measurements from an orbiting spacecraft. The lander also found that the soil was slightly alkaline and contained important nutrients and minerals.

Scientists think there could have been standing water at the site in the past or the ice could have melted and interacted with the minerals.

"Is this a habitable zone on Mars? I think we're approaching that hypothesis," said chief scientist Peter Smith of the University of Arizona. "We understand, though, that Mars has many surprises for us and we have not finished our investigation."

Bureau Report
»»  read more

Earth `survived` climate change long ago

During this time, the Earth was alternately subjected to the most severe ice age conditions it ever witnessed (with ice present even around the Equator), and then to widespread tropical greenhouse conditions, according to researchers.

"During these ice age events, any parts of the world that weren't at that time submerged under the ocean would most probably have been barren, icy wastelands -- including tourist destinations that are today considered tropical getaways.

"The extreme climates of the Snowball Earth period, together with the sudden and widespread appearance of very primitive multi-cellular lifeforms in a window of tropical climate between the period's two major ice age events, make this one of the most enigmatic episodes in Earth's history.

"A key question for scientists today is how these primitive lifeforms not only survived the extremely hostile temperatures of Snowball Earth's ice age periods, but actually seemed to thrive during the wild fluctuations from ice age to tropical conditions and back to ice age.

"Indeed, it is thought that the extreme climates of this period may actually have provided the real kick-start that nature needed to get the process of evolution underway," said lead researcher Stephen Gallagher of Geological Society of Australia.

However, according to the researchers, it's certainly not as extreme as periods of climate change that Earth has experienced in its first five billion years, and it may not be as extreme that Earth will experience "in the five billion years remaining before it".

Bureau Report
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Daytime sleepiness gene identified

Scientists in Japan have identified a gene variant that may be linked to narcolepsy -- a condition marked by excessive daytime sleepiness, impaired vision and muscle weakness. It occurs in 1 out of 2,500 individuals in the United States and Europe, but is at least 4 times more frequent in Japanese.

It occurs in 1 out of 2,500 individuals in the United States and Europe, but is at least 4 times more frequent in Japanese.

The researchers analyzed the genomes, or DNA, of 222 narcoleptic Japanese and 389 others who did not have that condition, and one gene variant occurred with significant frequency among those with narcolepsy, they wrote in a paper published in Nature Genetics.

"45 percent of those with narcolepsy had this gene variant compared to 30 percent of those without this condition," Professor Katsushi Tokunaga of the department of human genetics at the University of Tokyo said in a phone interview.

Identification of this gene variant could pave the way for experts to hunt for a treatment, Tokunaga said.

The gene is located between the genes CPT1B and CHKB, both of which appear to be linked to the disorder. CPT1B controls an enzyme that regulates sleep, while CHKB is linked to the sleep-wake cycle.

The scientists took a further step to examine that same gene variant in 424 Koreans, 785 people of European descent and 184 African Americans.

It occurred with significant frequency among narcoleptic Koreans, but the association was not evident in the Europeans and African Americans.

"We have no idea why this gene variant occurs with such high frequency among (narcoleptic) Japanese and Koreans ... it may be selection, or chance," Tokunaga said.

Bureau Report
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Dinosaur predator breathed like a modern bird

Scientists have unearthed the remains of a large meat-eating dinosaur with a breathing apparatus much like a modern bird, fortifying the link between birds and dinosaurs and helping to explain the evolution of birds' unique system of breathing.

Pulled from 85-million-year-old rock along the banks of Rio Colorado in Argentina's Mendoza Province, this 33-foot-long (10 meter), two-legged predator weighed as much as an elephant and likely had feathers, the scientists said.

But its method of breathing makes this dinosaur stand out, said Paul Sereno of the University of Chicago, who wrote about the find on Monday in the journal PLoS ONE.

Instead of lungs that expand and contract, Sereno thinks this beast had air sacs that worked like a bellows, blowing air into the beast's stiff lungs, much like modern birds.

"This dinosaur, unlike any other, provides more direct evidence of the bellows involved in bird breathing," Ricardo Martinez of the Universidad Nacional de San Juan, Argentina, who worked with Sereno on the research, said in a statement.

The team named the dinosaur Aerosteon riocoloradensis, meaning "air bones from the Rio Colorado," because its bones have pockets and a sponge-like texture called "pneumatization" in which air sacs from the lung invade the bone.

Most paleontologists believe birds evolved from small, feathered meat-eating dinosaurs, and the earliest known birds were strikingly similar to these dinosaurs.

The researchers think Aerosteon, a type of dinosaur called a theropod, may have evolved this breathing style in part to keep it from toppling over while chasing prey on its two massive legs. And it may have helped control body temperature.

"If dinosaurs and in particular theropods were 'warm-blooded' as many of us suspect and feathered for insulation, they would have had a major problem getting rid of heat at times. Perhaps this is why air sacs initially evolved, and then were co-opted for breathing," Sereno said.

Aerosteon was smaller than the very biggest meat-eaters, which included North America's Tyrannosaurus rex, Africa's Spinosaurus and Giganotosaurus, also found in Argentina.

Sereno thinks Aerosteon represents a separate line of predators that lived alongside and then outlasted Giganotosaurus. "This is one of the nice surprises of the find," he said in an e-mail.

Bureau Report
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Angkor Wat

Angkor Wat, renowned Hindu temple complex at Angkor, the capital of the Khmer Empire of Cambodia from the early 9th century to the mid-15th century, now a destination for Buddhist pilgrims. Built for King Suryavarman II in the 12th century, Angkor Wat is the most famous temple in Cambodia and is probably the largest religious monument ever constructed.

Photo by: adametrnal

Photo by: Adam Cathro

The complex, built of both sandstone and laterite (a dense, porous, iron-bearing soil that can be quarried like stone), forms a rectangle of about 850 m by 1000 m (2800 by 3800 ft). It was constructed to serve both as a sepulchre for Suryavarman II, whose regime had adopted some aspects of Hinduism, and as a celebration of his status as an incarnation of the Hindu god Vishnu. As a sepulchre the temple was built facing west (the direction taken by the dead in going to their next life, in Hindu belief), rather than facing east, which was traditional for Hindu temples. Taking more than 30 years to build, the layout of the complex was conceived as an architectural allegory of the Hindu cosmology (world concept). At the center of the complex stands a temple with five lotus-shaped towers, a larger central tower, and four smaller surrounding towers. These represent the five peaks of Mount Meru—according to Hindu belief, the mountain where the gods reside and from which all creation comes. The central tower enclosure is surrounded by three square, terraced enclosures that rise toward the central towers. The series of terraces symbolizes the mountain ranges that in Hindu cosmology surround the habitable world. The entire complex is surrounded by a moat over 5 km in length, representing the primordial ocean, over which extends an elaborate 475-m causeway, leading to the main of four gateways into the temple complex. The causeway was decorated on each side with carvings depicting the divine serpents, known as nagas.

Photo by: Adam Cathro

Photo by: cornstaruk

Angkor Wat is famous for having the longest running bas-relief in the world. Beautifully crafted, many of the carvings were once painted and gilded. They decorate the 2-m high, galleried walls having roofed walkways that run along the inside of the protective moat, just outside of the temple complex itself. The reliefs depict historical episodes in the life of King Suryavarman II; scenes from the Hindu epics the Ramayana and the Mahabharata; the exploits of the Hindu gods Shiva and Vishnu with celestial nymphs known as apsarases; and scenes from the daily life of the Khmer people at the time the complex was built. Some of Angkor Wat's bas-reliefs suffered damage at the height of Cambodia's Khmer Rouge movement in the 1960s and 1970s.

Photo by: Flydime

Photo by: Birger Hoppe

Angkor Wat fell to the Cham army from northern Cambodia in 1177, after which the complex proper began to fall into ruin. It was then reclaimed, though not inhabited, by Khmer King Jayavarman VII when he defeated the Chams soon after the beginning of his reign in 1181.

Photo by: mandalaybus

Photo by: felix.triler

Photo by: lecercle

Both Angkor Wat and Angkor Thum, Jayavarman VII's royal city to the north, were altered by subsequent inhabitants. Pillaged by Thai invaders in the 15th century, they were expanded by later rulers of Cambodia, some of whom replaced existing aspects altogether. In the 1400s the Angkor area was abandoned as a political capital for reasons of security and, after the Thai invasion of 1431, was not permanently inhabited as a capital again. Angkor Wat was intermittently inhabited by Buddhist monks, and about 1550 portions of its bas-reliefs were finally completed. It subsequently became a destination for Buddhist pilgrims from all over the world.

Photo by: Kenny McColl

Photo by: FredrikN

Photo by: tylerdurden1
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September 29, 2008

The Rods Phenomena

The Rods phenomena started in March 1994 when Jose Escamilla, a film editor from New Mexico, captured some interesting footage of a UFO sighting. As he studied the tapes in frame-by-frame detail, Escamilla noticed long, thin, bizarre objects darting about the screen. Initially he thought they were birds or insects that were very close to the camera lens, but as he sharpened the clarity of the picture, an elongated cylindrical body could be viewed.

Their rod-like shape gave them their name, and in subsequent years, a wealth of similar footage has been recorded from all corners of the globe. Rods seem to be living organisms, unnoticeable to the human eye because of their rapid movement. They have an extended, ultra-thin frame, and sets of wings or fins protruding from their body. The quick, haphazard motion suggests they are organic life, but detailed analysis is difficult, as they are only discernible in pictures taken with high-shutter-speed cameras. To some extent they look like stick insects with no real limbs, but the possibility that they are known organisms has been proven wrong.

Footage of rods moving alongside existing animals highlights the fact that their design and attributes are quite unlike any creature that we recognise. There has been a huge amount of private footage captured by enthusiasts, but very few examples of truly high-grade, broadcast quality photography. One of the best examples of rods on film came from Mark Lichtle, who was recording parachutists leaping into a cavern in Mexico called the Cave of the Swallows. During the 45 minutes of footage, countless rods can be seen alongside insects, birds and people, and it is now widely accepted that the Cave of the Swallows is one of the best places to capture rods on camera. However, rods are sighted across the world, and even the US Navy is reported to have knowledge and footage of the phenomenon. With an abundance of growing proof, it seems the idea of flying rods has to be taken seriously. But still, nobody has any idea what they truly are.

Matt Lamy

Video of this phenomena:

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September 27, 2008

Tiwanaku Ruins

Tiwanaku or Tiahuanaco, site of pre-Inca ruins in Bolivia, southeast of Lake Titicaca. Its location, in the Andes at about 3,800 m (about 12,500 ft) above sea level, made Tiwanaku the highest city in the ancient world. An earlier view that Tiwanaku was a ceremonial center that was used only periodically by the Aymara people, believed to be the city's founders, has been disproved by recent investigations in and around the site, which show it to have been a populous urban center supported by a sophisticated system of raised-field agriculture, well adapted to producing crops at high altitude. The few radiocarbon tests indicate founding dates older than ad 300. Certain structures were apparently left uncompleted when, for some unknown reason, all work ceased about ad 900.

Photo by: capouruguay

Photo by: willowD

Photo by: Jaza

Photo by: spooneater

Photo by: yochus

The masonry at Tiwanaku reveals some of the most skillful workmanship in South America. Certain stone-linking methods indicate the earliest use of metal for structural purposes in the western hemisphere. The Akapana, the largest unit at the site, is the remnant of a terraced pyramid about 15 m (about 50 ft) high and 152 m (500 ft) on each side. The most famous monument at the site is the Gateway of the Sun, an enormous sculpture carved from a single 9 metric-ton block of andesite and decorated with a distinct style of low-relief frieze. The meaning of the intricate symbolism in the decoration is uncertain. Another unit, the Kalasasaya, is a large square area delimited by upright monoliths (single blocks of stone), which appear originally to have formed part of a continuous wall. A semisubterranean temple nearby has been restored. Anthropomorphic statuary, mostly in characteristically symmetrical, stiff style, has also been found at the site.

Photo by: Jungle Boy

Photo by: soylentgreen23

Photo by: victorsounds

Photo by: kc camera

Photo by: esacarola

George Michanowsky
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September 26, 2008

UFO Timeline - Part 3


3,000 B.C. Incarnation of Melchizedek.

3,000 B.C. - Sumerians interact with the Reptilian Annunaki.

2,700 B.C. - Egyptian 365 Day Calendar.

2,345 B.C. - China - In the, Hsui-Nan-Tzu, a Chinese classic there is a description of 10 Suns appearing in the sky.

2,029 B.C. - Abram (Abraham) born in UR (South Chaldea)

2,000 B.C. Grand Canyon Flagstaff, Ariz. - A team of experts called in to examine strange debris at the bottom of the Grand Canyon discovered the wreckage of a UFO that crashed a mind boggling 4,000 years ago. The scientists, members of a highly secret joint military task force on UFOs, inspected the spherical craft and found it to be in good condition despite its rough landing and incredible age. The relic is made of an unknown metallic substance and emits low levels of radiation, according to leaks from highly placed sources. It was immediately removed from the site and is now in a secret location. My contacts tell me this craft is definitely of extraterrestrial origin and without a doubt carried a crew of 12 to 20 individuals, said Dr. Henry Leaumont, a California based astronomer who contacted this reporter after he was shown secret air Force documents relating to the find. Carbon dating shows it crash landed at the base of the canyon around 2,000 B.C. Cabin features suggest that the crew members were much like humans, although significantly smaller. They apparently breathed oxygen, guided their atom powered craft with a magnetic steering system and carried supplies of food and water on board. According to reports filed by the scientific team, the spacecraft was lodged in limestone rubble at the base of the canyon not far from an area called Comanche Point.

1,500 B.C. to 1,000 B.C. Egyptians: Observed numerous flying objects Egyptian carvings of flying objects (Found on the ceiling beams of a 3000-year old New Kingdom Temple, located several hundred miles south of Cairo and the Giza Plateau, at Abydos.) The Great Pyramid of Cheops and the Temple of Hathor are both connected to the Pleiades.

Source: A Chronology of UFOs through Time
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It did rain on Mars!

Scientists have presented evidence that lake deposits once formed inside impact craters on Mars, which may have been fed by short-lived rivers that were, in turn, fed by precipitation, suggesting that it used to rain on the Red Planet.

These are the findings of an international team of researchers led by Ernst Hauber of the German Aerospace Center, who analyzed the latest image data of the Martian surface.

They discovered delta deposits in these images, relatively unaffected by erosion, inside the craters.

The scientists explored the Xanthe Terra area located near the equator in the Martian highlands.

"For years, scientists have been suspecting that the current appearance of the landscape has, in part, been shaped by rivers that cut into the surface," explained Hauber.

"We can see layered sediments where these valleys open into impact craters. The shape of certain sediments is typical for deltas formed in standing water," he added.

The Xanthe Terra highlands in the equatorial region of Mars are traversed by deeply incised valleys. Scientists have suspected for a long time that these were formed by water erosion.

A particularly beautiful delta can be found here in a small crater with a diameter of only five kilometres.

The Nanedi river opens into the crater from the south, where the sedimentary material is distributed over a fan-shaped area. The crater is almost completely filled with sediments.

Topographic data derived from the stereo images recorded by the HRSC camera show that the layer of material is at least 50 metres thick and the deposits cover an area of about 23 square kilometres.

Very thin layers can be seen along the edge of the deposits. Such thin layers are also typical for deltas on Earth.

A particularly interesting discovery is the small valley that leaves the crater towards the east, which provides evidence that water must have indeed been "standing" in the crater.

"If the water flowed into the crater and back out again, it must have filled it up as well," said Hauber. "In this and in a few other cases, we are fairly certain that there were lakes on Mars," he added.

The researchers can also narrow down the period when the craters were filled with lakes. In order to do so, they analyse the statistical distribution of impact craters of different sizes.

The crater counts revealed that water was flowing through the valleys between about 4 and 3.8 billion years ago. The valleys themselves could have formed relatively fast.

According to the research, it would not have taken more than a few hundred thousand years for the deltas to reach their current dimensions. Compared to other geological timescales, especially in planetary geology, this is a very short period of time.

Thus, there must have been precipitation on early Mars.

ANI
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Scientists discover the oldest rocks on Earth

Researchers from the University of McGill in Canada have found the oldest rocks on Earth, which are as old as 4.28 billion years, a discovery which pushes back the age of most ancient remnants of Earth’s crust by 300 million years.

These rocks, known as “faux-amphibolites”, may be remnants of a portion of Earth’s primordial crust – the first crust that formed at the surface of our planet.

The ancient rocks were found in Northern Quebec, along the Hudson’s Bay coast, 40 km south of Inukjuak in an area known as the Nuvvuagittuq greenstone belt.

The discovery was made by Jonathan O’Neil, a PhD candidate at McGill’s Department of Earth and Planetary Sciences, Richard W. Carlson, a researcher at the Carnegie Institution for Science in Washington, DC, Don Francis, a McGill professor in the Department of Earth and Planetary Sciences, and Ross K. Stevenson, a professor at the Universite du Quebec a Montreal (UQAM).

O’Neil and colleagues estimated the age of the rocks using isotopic dating, which analyzes the decay of the radioactive element neodymium-142 contained within them.

This technique can only be used to date rocks roughly 4.1 billion years old or older.

This is the first time it has ever been used to date terrestrial rocks, because nothing this old has ever been discovered before.

The data from these findings will give researchers a new window on the early separation of Earth’s mantle from the crust in the Hadean Era, according to O’Neil.

“Our discovery not only opens the door to further unlock the secrets of the Earth’s beginnings,” he said.

“Geologists now have a new playground to explore how and when life began, what the atmosphere may have looked like, and when the first continent formed,” he added.

ANI
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Stephen Hawking Sending DNA Into Space

Stephen Hawking, best selling author of "A Brief History of Time" and the children's book "George's Secret Key to the Universe" written along with his daughter Lucy, will be sending his digitized DNA into space as part of NCsoft's® Operation Immortality™. Lucy Hawking is also participating in the project. Together, the father and daughter are hoping the project will raise awareness of the Archon X PRIZE for Genomics, a competition that will award $10 million to the first person or team that can sequence 100 human genomes within 10 days or less.

Operation Immortality is a project intended to collect and archive the very best of what humanity has accomplished by sending a digital time capsule of the human race, including messages from people around the world and DNA samples from some of our brightest minds, musicians, athletes and video game players.

Hawking's DNA will be transported into space by celebrated video game developer and longtime member of the X PRIZE Foundation's Board of Trustees, Richard Garriott, who is traveling to the International Space Station (ISS) in October. Garriott, whose most recent video game project, Tabula Rasa®, depicts the destruction of mankind by an alien invasion, will take Hawking's digitized DNA as well as an electronic copy of "George's Secret Key to the Universe" on a storage device called the Immortality Drive where it will be placed on the ISS.

This is not the first time Hawking and Garriott have teamed up for high-flying adventures. In 2007, Garriott hosted Hawking aboard a zero gravity flight where Hawking was able to experience a weightless environment.

"Richard and I share the same dream of traveling into space," said Stephen Hawking. "And we both realize the incredible importance of DNA to life in the universe."

In actuality, Hawking would like to have sent his completely sequenced genome into space. Current science however, is not yet capable of producing low-cost, fully sequenced genomes. By participating in this project, Hawking hopes to highlight the need for inexpensive, fully sequenced human genomes so that scientists and doctors can begin to better understand ways to identify, treat and prevent disease.

Richard Garriott said, "This is simply one of the most exciting honors of my life. To have Stephen Hawking participate in my space flight project is incredible and it makes this once-in-a-lifetime experience even more meaningful and exciting. If our world did meet an early end, anyone who finds the Immortality Drive will certainly find the best that humanity has to offer."

The "Immortality Drive," is currently in the process of being loaded with information from people all over the world at the OperationImmortality.com website. Players in Garriott's latest game, Tabula Rasa, will also have their character information downloaded onto the drive.

Mankind is encouraged to submit their suggestions for humanity's greatest achievements, and leave their immortalized message for future generations. A select few may also have their DNA chosen to join Garriott, Hawking and other icons on an out-of-this-world experience, and possibly become the future of mankind.

Hawking's book, "George's Secret Key to the Universe" takes young readers on a rollercoaster ride through the vastness of space. In the midst of this exciting adventure, the book shows the mysteries of physics, science and the Universe with George, his friends next door, and a super-intelligent computer called Cosmos, which can take them to the edge of a black hole and back again. For more information on "George's Secret Key to the Universe" and Stephen Hawking, go to: http://www.hawking.org.uk.
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Ramses II bust found in Egypt

Archaeologists have found the bust of pharaoh Ramses II in Egypt's Nile Delta, Culture Minister Faruq Hosni said, bringing experts closer to finding a temple belonging to the king.

The red granite bust, which formed part of a colossal statue of the king, was found during routine excavations in the Tell Basta area, 80 kilometres (50 miles) north of Cairo in the Nile Delta, Hosni said in a statement.

"The head is 76 cm high (around 30 inches), the nose is broken, and the false beard that was once attached to the king's chin is missing," antiquities supremo Zahi Hawass said.

"The discovery is important because it may indicate that the excavators are close to the ruins of a major temple of Ramses II in the area," Hawass said.

Tell Basta is going through a major development plan, according to Egyptian officials, who say that a museum and a visitor's centre are currently under construction in the area.

Ramses II reigned over Egypt for about 68 years, from 1304 to 1237 BC, and is believed to have lived to the age of 90.

He covered the country with monuments to his exploits. His mummy, on display in Cairo's National Museum, is one of the country's biggest tourist attractions.

AFP
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September 25, 2008

Discovered North America's smallest dinosaur

A Canadian researcher has discovered what is believed to be North America's smallest dinosaur, a 70-million-year-old chicken-sized beast that was also unusual for its diet of insects.

Called the Albertonykus borealis, the odd-looking creature had bird-like features including slender legs, jaws like pincers and stubby arms with big claws.

Its bones were excavated near Red Deer, in fossil-rich Alberta, in 2002 among about 20 Albertosaurus remains, and went unnoticed.

The dinosaur is a newly discovered member of the family Alvarezsauridae, from which fossils had previously been dug up only in South America and Mongolia, said Nick Longrich, paleontology research associate at the University of Calgary.

The find is evidence that the dinosaurs migrated to Asia from the bottom part of the western hemisphere, Longrich said.

His research on the Albertonykus is published in the journal Cretaceous Research.

"Most of the dinosaurs we know about -- things like Tyrannosaurus, giant carnivores, or Triceratops, big herbivores -- are large. This thing is very small, about 2-1/2 feet (two-thirds of a meter) long and we think it's doing something very different: we think it might have actually been an insectivore," he said.

It was not made for digging, like moles. Its features were not unlike those of anteaters, and Longrich said it appears it tore into logs so it could feast on termites or beetles.

"This is a dinosaur doing what we didn't have a lot of evidence of them doing before," he said.

He said it may have been prey for such other dinosaurs as Albertosaurus and Velociraptors, those that could catch the speedy little beast.

"(The find) tells us a little bit about how these dinosaurs were dispersing through the environment, and I think one of the things that it also emphasizes is that there's a lot more waiting to be discovered," Longrich said.

Jeffrey Jones
Source:
Reuters
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September 24, 2008

'Enigma' optical illusion is solved

The cause of an optical illusion, made famous by a 1981 painting, has finally been solved.

Neuroscientists have shown that the way our eyes constantly make tiny movements is responsible for the way concentric circles in Isia Leviant's painting 'Enigma' (see image, left) seem to flow before onlookers' eyes.

Susana Martinez-Conde and her team from the Barrow Neurological Institute in Phoenix, Arizona, tested whether the effect was down to tiny, involuntary jerks of the eyes, known as microsaccades. Their purpose is not fully understood, but the rate of these movements is known to vary naturally.

In the team's experiment, while three subjects viewed Enigma, cameras recorded their eye movements 500 times every second. The subjects were asked to press a button when the speed of the optical "trickle" of the illusion appeared to slow down or stop, and release it when the trickle seemed faster.

Accounting for the reaction time required to press the button, the results showed that the illusion became more pronounced when microsaccades were happening at a faster rate. When the rate slowed to a stop, the illusion vanished.

Those results go against earlier findings that suggested eye movements were not responsible for the effect.

A previous study involved giving volunteers contact lenses with tiny stalks attached that held a version of the illusion, ensuring, the team thought, that it was always stationary relative to the eye. The volunteers still experienced the illusion, suggesting that the brain actually caused the phenomenon.

But the effect of microsaccades was not taken into account, says Martinez-Conde, since the contact lenses do not keep pace with the eye during such rapid, jerky movements.

"We can now rule out the idea that the illusion originates solely in the brain," she told.

Martinez-Conde adds that their research may also explain other similar illusions, such as Bridget Riley's Fall, or the Ouchi illusion. "It would be unexpected if Enigma is the only illusion affected by eye movements," she says.

However, the researchers are still in the dark as to what brain processes link the eye movements and the perception of an illusion. They intend to develop new experiments to find out.

David Robson
Source: NewScientist
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Mars Rover Heads to a New Crater

After two years exploring a half-mile-wide crater, NASA’s Mars rover Opportunity is heading for an even wider destination: a crater 13.7 miles wide. (Manhattan, at 13.4 miles long, would fit inside.)

Within the larger crater, named Endeavour, scientists expect that Opportunity would see deeper layers of rock, which would provide more information on the geological past of Mars. But to get there, the rover needs to drive about seven miles southeast. That would match its total driving distance since it landed in January 2004, and NASA warns that Opportunity might not make it.

“It’s a long shot,” said Steven W. Squyres, the principal investigator for Opportunity and its sister rover, Spirit, on the other side on Mars. “We’ve got 12 kilometers on the odometer and another 12 to go to get to this thing.”

At a pace of about 110 yards a day, and allowing time for obstacles, glitches and sightseeing, the trip could take two years. Opportunity has already far outlived its original mission target of three months.

But the journey itself has its own scientific rewards, Dr. Squyres said. In the geology of the region, plains known as Meridiani Planum, the top layers of exposed bedrock, are younger to the south, so the rover will get to see rocks it has not seen before. Also, the plains are strewn with potato-size rocks; examinations of a handful of these show them to be very different from the rocks of Meridiani Planum.

“We think they are pieces of ejecta, things that have been thrown from very distant craters,” Dr. Squyres said. The biggest craters in the area lie to the south. “Those are the most likely source of the cobbles,” Dr. Squyres said.

In its four and a half years on Mars, Opportunity has already explored three craters. By chance, it landed in a small crater. Then it headed to the stadium-size Endurance Crater, followed by the half-mile-wide Victoria Crater. It left Victoria Crater this month.

Meanwhile, the Spirit rover is still sitting still in Gusev Crater on the other side of Mars, conserving energy through the Martian winter. With the lengthening days of spring, Spirit is likely to resume its driving and exploration in a couple of months, Dr. Squyres said.

Kenneth Chang
Photo by: NASA
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Rainbow Serpent

Semimythical giant snake of Australia.

Variant names: Almudj (Gunwinggu/Australian), Dhakkan, Galeru, Julunggul, Kalseru, Ngalyod (Gunwinggu/Australian), Takkan, Wagyl, Wollunqua, Wonambi, Yingarna (for the female), Yurlunggur (Bindubi/Australian). Physical description: Horselike head. Horns or ears. Skin glistens like a rainbow. Tail pointed or spiked. Sometimes a composite creature, with a kangaroo’s head and a crocodile’s tail joined by a python’s body.

Behavior: Responsible for rain and floods. Turns boats over but doesn’t attack people. Oviparous. Habitat: Rivers and estuaries. Distribution: Arnhem Land, Northern Territory. Significant sighting: Rock art depicting Rainbow serpents appeared in Arnhem Land as early as 4000 B.C.

Possible explanations:

(1) A surviving Pleistocene madtsoiid snake, the Giant Australian python (Wonambi naracoortensis), known from fossil deposits in South Australia. It ranged from 10 to 20 feet in length. It may have persisted until 40,000 or 30,000 years ago, or roughly the age of rock-art depictions of the Rainbow serpent by Aborigines.

(2) After a statistical analysis of 107 rock-art images, Paul Tacon, Meredith Wilson, and Christopher Chippindale determined that the closest physical match is the foot-long Ribboned pipefish (Haliichthys taeniophora), found off Irian Jaya, Indonesia, and the coast of northern Australia from Shark Bay to the Torres Strait. Changes at the end of the last Ice Age would have resulted in incursions of the sea into traditional hunting grounds. This bizarre-looking marine fish, though small, could have symbolized the new lifestyles generated by earth changes and flooding.

George M. Eberhart
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September 23, 2008

UFO Timeline - Part 2


12,000 B.C. - Paintings in caves in Northern Spain and Southern France depict Disc-like Objects.

12,000 B.C. - Soviet Scientists discover "Age-old Instruments" with Mercury inside, in caves in the Gobi Desert and Turkestan. Dating back to 12 000BC.

11,000 B.C. - A Meteorite catalogued as ALH84001 from Mars crashed into Antarctica.

10,000 B.C. - The Dropas - In 1938 archaeologist Chi Pu Tei discovered regularly aligned rows of graves in the Baian Kara Ula mountains near the Sino-Tibetan border. Beneath cave drawings of beings wearing helmets along with depictions of the stars, sun and moon, small frail skeletons with unusually large skulls were found. Chi Pu Tei theorized that the skeletons belonged to an extinct species of mountain ape and that the drawings were left in the caves by human tribes. Since the graves were in systematic rows, his theory was laughed at and forgotten until 1962, when stone plates found among the graves were translated by Professor Tsum Um Nui of the Academy of Prehistoric. The translation told an eerie story of a group of beings that crash-landed on the third planet of this star system about twelve thousand years ago. Unable to repair their craft, this group attempted to make friends with the mountain tribes but were hunted down and killed due to their non-human features.

10,000 B.C. Lemuria: A civilization which existed prior to and during the time of Atlantis. Most of what is written is metaphoric - linking to the patterns of creation and sacred geometry. Physically, it is believed that Lemuria existed in the Southern Pacific, between North America and Asia/Australia. Lemuria is also sometimes referred to as Mu.

8,000 B.C. - Australia - The Aborigine believed in "Dawn Beings" from the Stars. Their cave paintings depict Celestial Beings, with Antenna and X-Ray style drawings. They were very advanced in "Aerodynamics". The Boomerang is identical to modern day Aircraft's Wing. Aborigine means "From the beginning".

6,000 B.C. Sumer, amazing in its "sudden", mature, and highly advanced character, was set up under Anunnaki tutelage in Mesopotamia… Humans were taught technology, mathematics, astronomy, advanced crafts and the ways of advanced civilized society…

4,000 B.C. Creation of Adam and Eve.

4,000 B.C. - The Sumerians from today's Iraq had contact with Extraterrestrial (ET) civilizations according to their text. The ET's also interbred with Humans and their Kings traveled to the Stars with ET's. Sumerian text coincides with "The Book of Genesis". Their Astronomy was highly developed. They had numbers with 15 Digits. Their text stated the ET's were from Mars, Pleiades Star Cluster and Sirius. They had drawings of our Solar System.

3,000 B.C. - China - The book, "Memories of the Sovereigns and the Kings" published in the 3rd Century AD wrote of "Sons from the Sky", would descend to Earth on a Star which was shaped like a Saucer.

Source: A Chronology of UFOs through Time
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September 22, 2008

The Nancy shipwreck of 1784 is found

The whereabouts of The Nancy, which sank off the western shores of the Isles of Scilly in 1784, has long remained a mystery.

The loss of the ship was all the more tragic because on board was Ann Cargill, a famous 18th century opera singer who was returning from India with her illegitimate child.

Her body - still clutching the baby - was recovered and then buried, but the wreck of the The Nancy was never traced.

A total of 49 people were on board the London bound vessel when it got into difficulty during a violent storm. It was thought she broke up as she sank.

Numerous expeditions searched for the wreckage in vain, but two Scilly Isles residents, Todd Stevens and Ed Cumming, said they had been looking in the wrong place.

Mr Cumming, 62, said a record of the event had confused the ship with its lifeboat: "It had been written that they 'were driven' onto Rosevear Island by the stormy sea and most people took it that meant The Nancy.

"We realised that after the ship had hit the rocks, the passengers had got into a smaller boat and that was the one that was 'driven' onto Rosevear.

"So people were looking in the wrong place for The Nancy, they should have been looking further out."

Mr Stevens, 46, who moved to the Isles of Scilly 10 years ago, said they had discovered a number of wrecks while searching for The Nancy.

"Doing this has been so rewarding," he said. "We are still trying to piece together the human stories around the wreck, it has been a real thrill. This kind of discovery is what you go diving for."

Cargill, who made her name in Covent Garden and Drury Lane, was known for her colourful romantic life and eloped several times before heading to India to be with her latest love who was stationed in Calcutta with the British East India Company in 1783.

By now a wealthy women, she was sent home by Prime Minister William Pitt The Younger, who said "an actress should not be defiling the pure shores of India". On her death, she was said to be worth £200,000.

"It is one of the best stories I have ever told," said Mr Cumming. "It has everything, a beautiful actress, a tragic shipwreck and a lost fortune.

"The Nancy was bound from Bombay to London when she ran into a dreadful storm near the treacherous rocks west of Scilly.

"There was no lighthouse to guide them as Bishops Rock had not been built. They would not have been able to see the lighthouse at St Agnes either."

The apparent location of the wreck was found last year, but has only just been disclosed to protect the site.

The divers, who have written a book entitled The Ghosts of Rosevear, have yet to discover any treasure on board, but plan to hand all material over to the Isles of Scilly Museum.

A spokeswoman from the Receiver of Wreck, part of the Maritime and Coastguard Agency said: "Todd Stevens and Ed Cumming are both well known for their wreck research.

"We are certainly aware of the work they have been doing on their site."

Caroline Gammell
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The Turin Shroud

The Turin Shroud is probably the most famous religious relic in the world. The cloth measures thirteen-and-ahalf feet long by four-and-a-half feet wide, and clearly depicts the body of a bearded man, said to be Jesus Christ. Its legend states that it was used by Joseph of Arimathea to wrap the body of Christ after his crucifixion. Its first appearance in recorded history came in 1357, in the little village of Lirey in France. It was then taken to ChambĂ©ry, in the Savoy region of the country in 1457, and it was there in 1532 that the shroud was almost destroyed in a fierce fire. This experience left charred marks on the corner of the folds in the fabric, and in 1578 it was taken to Turin where it has remained ever since. The Catholic Church is convinced that the shroud genuinely possesses an amazing physical record of Christ’s body, and the cloth is now only shown to the public on rare occasions.

However, organised religion has not always been so accepting. Research has uncovered documents from 1389 written by the Bishop of Troyes and Pope Clement VII. Lirey was in the Bishop’s diocese, and he asked the Pontiff to publicly rule that the shroud was merely a painting. He stated that the image had actually been painted by an artist, originally as decoration, but the priests in Lirey had started duping the local public into believing it was Christ’s authentic death shroud. The Pope’s conclusion bowed to the Bishop’s wishes, but was hardly resolute. He declared that the shroud could keep being exhibited, but each time it was shown, the local priest had to announce to the assembled public that the relic only depicted a painted copy of Christ’s real cloth.

Over the years such practices fell away, and authenticity of the shroud was assumed. The early days of the enlightened age of science seemed to corroborate this belief. In 1898 photographic experts revealed the image was actually a negative picture, and seen in reverse tones, the outline showed a much more detailed view of the body. By 1901, Dr Paul Vignon produced a theory that such a phenomenon was caused by ammonia emanating from Christ’s dead body after his terrible death. Vignon believed the resulting image was therefore beyond the ability of any forger, and must have been authentic. But that is not the view of more modern appraisals, and in 1979 Dr Walter McCrone conducted a series of advanced scientific tests on samples of the shroud. Using microscopic and microchemical forensic techniques, McCrone and his associates discovered particles of red ochre and vermilion pigment mixed with a tempera medium. No blood was found on the cloth.

Tempera was a substance widely used by medieval painters, and recent theories suggest that the original light yellow paint has turned dark brown over the centuries. Similarly, the background cloth has actually faded to a paler hue, thus causing the strange negative image effect, misunderstood by earlier researchers. The most famous and conclusive recent tests involved radiocarbon dating of the shroud. In 1988, laboratories in America, Switzerland and England performed examinations on sections of the cloth. All three concluded the material was produced between AD 1260 and 1390, thereby fitting in with the historical recorded period of the picture’s production. There is also common sense evidence against the shroud’s authenticity.

Firstly, the Greek New Testament itself claims Christ was actually wrapped in strips of linen, not a whole sheet. We also have no idea of the provenance of the shroud before the fourteenth century. Finally, the image on the shroud has quite obviously faded and damaged over the last few centuries, whilst it has been in the care of the Catholic Church, although when it was first viewed, witnesses stated that the picture was bright and vibrant. Despite these questions surrounding the shroud, some investigators continue to search for proof of its authenticity. One recent theory states the samples taken for carbon dating were contaminated by fungi and bacteria that had grown in the cloth over the centuries. This idea is also used as an explanation for some dressings on Egyptian mummies that have been carbon dated at an age many hundreds of years later than the remains they cover. But most of the scientific community is convinced that by combining and corroborating the evidence, the Turin Shroud is simply a medieval painting that subsequently assumed mystical beliefs. Even so, it can be confidently claimed that the shroud is the world’s greatest explained mystery.

Matt Lamy
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Found the lost capital of the Khazars

A Russian archaeologist says he has found the lost capital of the Khazars, a powerful nation that adopted Judaism as its official religion more than 1,000 years ago, only to disappear leaving little trace of its culture.

Dmitry Vasilyev, a professor at Astrakhan State University, said his nine-year excavation near the Caspian Sea has finally unearthed the foundations of a triangular fortress of flamed brick, along with modest yurt-shaped dwellings, and he believes these are part of what was once Itil, the Khazar capital.

By law Khazars could use flamed bricks only in the capital, Vasilyev said. The general location of the city on the Silk Road was confirmed in medieval chronicles by Arab, Jewish and European authors.

"The discovery of the capital of Eastern Europe's first feudal state is of great significance," he told The Associated Press. "We should view it as part of Russian history."

Kevin Brook, the American author of "The Jews of Khazaria," e-mailed Wednesday that he has followed the Itil dig over the years, and even though it has yielded no Jewish artifacts, "Now I'm as confident as the archaeological team is that they've truly found the long-lost city,

The Khazars were a Turkic tribe that roamed the steppes from Northern China to the Black Sea. Between the 7th and 10th centuries they conquered huge swaths of what is now southern Russia and Ukraine, the Caucasus Mountains and Central Asia as far as the Aral Sea.

Itil, about 800 miles south of Moscow, had a population of up to 60,000 and occupied 0.8 square miles of marshy plains southwest of the Russian Caspian Sea port of Astrakhan, Vasilyev said.

It lay at a major junction of the Silk Road, the trade route between Europe and China, which "helped Khazars amass giant profits," he said.

The Khazar empire was once a regional superpower, and Vasilyev said his team has found "luxurious collections" of well-preserved ceramics that help identify cultural ties of the Khazar state with Europe, the Byzantine Empire and even Northern Africa. They also found armor, wooden kitchenware, glass lamps and cups, jewelry and vessels for transporting precious balms dating back to the eighth and ninth centuries, he said.

But a scholar in Israel, while calling the excavations interesting, said the challenge was to find Khazar inscriptions.

"If they found a few buildings, or remains of buildings, that's interesting but does not make a big difference," said Dr. Simon Kraiz, an expert on Eastern European Jewry at Haifa University. "If they found Khazar writings, that would be very important."

Vasilyev says no Jewish artifacts have been found at the site, and in general, most of what is known about the Khazars comes from chroniclers from other, sometimes competing cultures and empires.

"We know a lot about them, and yet we know almost nothing: Jews wrote about them, and so did Russians, Georgians, and Armenians, to name a few," said Kraiz. "But from the Khazars themselves we have nearly nothing."

The Khazars' ruling dynasty and nobility converted to Judaism sometime in the 8th or 9th centuries. Vasilyev said the limited number of Jewish religious artifacts such as mezuzas and Stars of David found at other Khazar sites prove that ordinary Khazars preferred traditional beliefs such as shamanism, or newly introduced religions including Islam.

Yevgeny Satanovsky, director of the Middle Eastern Institute in Moscow, said he believes the Khazar elite chose Judaism out of political expediency — to remain independent of neighboring Muslim and Christian states. "They embraced Judaism because they wanted to remain neutral, like Switzerland these days," he said.

In particular, he said, the Khazars opposed the Arab advance into the Caucasus Mountains and were instrumental in containing a Muslim push toward eastern Europe. He compared their role in eastern Europe to that of the French knights who defeated Arab forces at the Battle of Tours in France in 732.

The Khazars succeeded in holding off the Arabs, but a young, expanding Russian state vanquished the Khazar empire in the late 10th century. Medieval Russian epic poems mention Russian warriors fighting the "Jewish Giant."

"In many ways, Russia is a successor of the Khazar state," Vasilyev said.

He said his dig revealed traces of a large fire that was probably caused by the Russian conquest. He said Itil was rebuilt following the fall of the Khazar empire, when ethnic Khazars were slowly assimilated by Turkic-speaking tribes, Tatars and Mongols, who inhabited the city until it was flooded by the rising Caspian Sea around the 14th century.

The study of the Khazar empire was discouraged in the Soviet Union. The dictator Josef Stalin, in particular, detested the idea that a Jewish empire had come before Russia's own. He ordered references to Khazar history removed from textbooks because they "disproved his theory of Russian statehood," Satanovsky said.

Only now are Russian scholars free to explore Khazar culture. The Itil excavations have been sponsored by the Russian-Jewish Congress, a nonprofit organization that supports cultural projects in Russia.

"Khazar studies are just beginning," Satanovsky said.

Mansur Mirovalev
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Devil's Town - The complex of stone pyramids

The Djavolja Varos (Devil's Town) natural landmark is situated on the south slopes of Mt. Radan, on the right bank of the Yellow river, in the central Serbia. Djavolja Varos is a unique example of the action of erosion. It is a complex of stone pyramids located in the watershed between Djavolja jaruga and Paklena jaruga (Devil's Gully and Hellts Gully). On an area of 4,300 sq.m. water erosion has shaped andesite material and volcanic tufa into over 200 pyramids - towers standing from 2 -15 m. tall, width at base 4 to 6 m. and at the summit 1 - 2 m. Most of these pyramids have caps or heads - andesite blocks protecting them from fast decey.

The absolute height of the locality is 700-720 m. Stone pyramids are ephemeral forms, for they disintegrate relatively quickly (when they lose their protective "cap"), and are formed equally quickly through water erosion. Hence the name Djavolja Varos (Devil's Town), because the locals believe that these changes occur as devils fight each other for power. These pyramids came into existence by water erosion, in heterogeneous material; the more massive block on the surface prevented the material beneath it from being destroyed and eroded away, resulting in the formation of the "towers" - pyramids. Two hydrological phenomena characterize the locality: one known as Devil's Water ( a highly mineralized spring, the water of which is used in traditional medicine), and another called the Devil's Well (a pressurized spring).

The water is of a markedly red colour, while the area surrounding this natural phenomenon, the soil and the rocks, as well as the pyramids themselves, are of different colours giving a bizarre appearance to the entire scenery. This miraculous worid also features acoustic phenomena which justity the designation "Devil's Town": the wind which hums between the pyramids crestes strange murmurs, howling, sighs, squeaking, which has frightened the local population for centuries and is behind their superstitious lore. The remains of two old churches stand in the vicinity of this natural sculpture; the rich tradition and folk customs of this region are closely associated with this natural phenomenon. Throughout the centuries this area has seen an intertwining of natural phenomena and the life of man.


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