Hubble Captures ‘Ghost Light’ of Stars Ejected from Ancient Galaxies in Abell 2744

Astronomers using NASA’s Hubble Space Telescope to probe a galactic supercluster known as Abell 2744 have found forensic evidence of galaxies that were gravitationally ripped apart approximately 6 billion years ago. The Universe is an infinite sea of galaxies. When they group together in giant clusters, some of them can be ripped apart by the [...] —> Read More Here

Ross Island 2014: Journey’s End

Figure 2) A typical stormy day in McMurdo Station, Antarctica this year. Photo by John Catto.
A typical stormy day in McMurdo Station, Antarctica this year. (Photo by John Catto)

Our fieldwork season in Antarctica is complete! All told, it has been a very successful trip despite less-than-favorable weather. In fact, it has truly been a weather-challenged season that has required patience and “binge working” when the weather allowed. For example, for my last sampling effort, when the weather finally cleared after five stormy days, Alasdair Turner (a full time McMurdo field mountaineer and professional photographer) and I jumped into a helicopter at about 10:00 p.m. and flew to Cape Crozier to sample until about 3:00 a.m.

When that was done, I went to bed for a couple of hours, got up at 6:00 a.m., ate a quick breakfast and then went back out sampling on snowmobiles to Hut Point Peninsula with McMurdo field coordinator Carrie Schaffner.* We rode around until we saw the next storm rolling in at around noon and headed back to McMurdo Station (approximately one hour away on snow mobiles).

To put a scientific spin on the weather this year, I had a conversation with Art Cayette, who is in charge of government oversight for meteorology in Antarctica. Art’s take on this year’s weather —> Read More Here

Earth Dodges a Bullet — New Radar Images of Asteroid 2014 SC324

Goldstone delay-Doppler images of 2014 SC324 obtained on October 25. The images span an interval of about 45 minutes and show considerable rotation by this object, which has an irregular and elongated shape. Credit: NASA/JPL

Goldstone delay-Doppler images of 2014 SC324 obtained on October 25. The images span about 45 minutes and show its rapid rotation. The asteroid has an irregular and elongated shape. Credit: NASA/JPL

Looks like we dodged a bullet. A bullet-shaped asteroid that is. The 70-meter Goldstone radar dish, part of NASA’s Deep Space Network, grabbed a collage of photos of Earth-approaching asteroid 2014 SC324 during its close flyby last Friday October 24. These are the first-ever photos of the space rock which was discovered September 30 this year by the Mt. Lemmon Survey. The level of detail is amazing considering that the object is only about 197 feet (60-meters) across. (…)
Read the rest of Earth Dodges a Bullet — New Radar Images of Asteroid 2014 SC324 (249 words)


© Bob King for Universe Today, 2014. |
Permalink |
No comment |

Post tags: , , , ,

Feed enhanced by Better Feed from Ozh

—> Read More Here

1 2 3 339