Astronomy Cast Ep. 375: The Search For Life in the Solar System

With the discovery of water ice in so many locations in the Solar System, scientists are hopeful in the search for life on other worlds. Guest Morgan Rehnberg returns to Astronomy Cast to explain the best places we should be looking for life.
(…)
Read the rest of Astronomy Cast Ep. 375: The Search For Life in the Solar System (46 words)


© Fraser for Universe Today, 2015. |
Permalink |
No comment |

Post tags: , ,

Feed enhanced by Better Feed from Ozh

—> Read More

Watch A Video Of Obama’s Speech From The 2015 White House Correspondents’ Dinner

President Barack Obama brought the laughs on Saturday at the annual White House Correspondents’ Dinner in Washington, D.C.

Obama joked about climate change, the 2016 candidates and his own religion, among other things.

Watch a video of Obama’s speech above, and see more from the WHCD below:

– This feed and its contents are the property of The Huffington Post, and use is subject to our terms. It may be used for personal consumption, but may not be distributed on a website.

—> Read More

Weekly Space Hangout – April 26, 2015: Special Cosmoquest Hangoutathon Edition

Host: Fraser Cain (@fcain)

Guests:
Morgan Rehnberg (cosmicchatter.org / @MorganRehnberg )
Nicole Gugliucci (cosmoquest.org / @noisyastronomer)
Nancy Atkinson (UniverseToday.com / @Nancy_A)

(…)
Read the rest of Weekly Space Hangout – April 26, 2015: Special Cosmoquest Hangoutathon Edition (507 words)


© Fraser for Universe Today, 2015. |
Permalink |
No comment |

Post tags: , , , , , , , , , , , , , ,

Feed enhanced by Better Feed from Ozh

—> Read More

Happy Birthday, Hubble: Seeing the Universe in a New Light

2015-04-24-1429907733-1648583-thrmometer_4_strfld.jpg

If you are at all interested in astronomy, chances are you’ve already heard that the Hubble Space Telescope is celebrating its
The Electromagnetic Spectrum. NASA’s Great Observatories (Compton, Chandra, Hubble and Spitzer) and the electromagnetic thermometer scale. (Credit: NASA/CXC/M.Weiss)

The four Great Observatories, in order of their launches that took place between 1990 and 2003, are Hubble, the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.


A photo of the Hubble Space Telescope, doing its job in space. Credit: NASA

NASA’s Hubble Space Telescope was launched on April 24, 1990. Hubble has four main scientific instruments that allow it to observe not only in visible light but also near ultraviolet and near infrared. Hubble helped determine how old our Universe is, what quasars are, and also helped discover “dark energy.”

2015-04-24-1429907884-1339587-compton_inSpace.jpg
The space shuttle crew took a photo of the Compton Gamma Ray Observatory as the satellite was deployed, with Earth visible beneath it. Credit: NASA/MSFC

In 1991, NASA launched a satellite into space carrying the Compton Gamma Ray Observatory (CGRO). The goal of Compton was to study gamma rays from objects far out into space. Gamma ray telescopes can study incredibly exotic objects such as blazars, magnetars, cosmic rays, and dark matter. Compton operated in space until when NASA intentionally sent it into the Earth’s ocean in 2000.

2015-04-24-1429907914-2042524-chandra_4k_V2_Sm.jpg
An artist’s illustration of the Chandra X-ray Observatory in space. Credit: NGST

NASA’s Chandra X-ray Observatory is a telescope specially designed to detect X-ray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes. Because X-rays are absorbed by Earth’s atmosphere, Chandra must orbit above it, up to an altitude of —> Read More

1 2 3 2,613