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Could we be in the middle of a cosmic void?
On large scales, the Universe is homogeneous and isotropic. This means that no matter where you are located in the cosmos, give or take the occasional nebula or galactic cluster, the night sky will appear approximately the same. Naturally there is some 'clumpiness' in the distribution of the stars and galaxies, but generally the density of any given location will be the same as a location hundreds of light years away. This assumption is known as the Copernican Principle.
[more at link] On large scales, the Universe is homogeneous and isotropic. This means that no matter where you are located in the cosmos, give or tak... more -
NASA Targets GLAST Launch For No Earlier Than June 11
(( About GLAST: ))
NASA's Gamma-Ray Large Area Space Telescope (GLAST) is a powerful space observatory that will open a wide window on the universe. Gamma rays are the highest-energy form of light, and the gamma-ray sky is spectacularly different from the one we perceive with our own eyes. With a huge leap in all key capabilities, GLAST data will enable scientists to answer persistent questions across a broad range of topics, including supermassive black-hole systems, pulsars, the origin of cosmic rays, and searches for signals of new physics.
The mission is an astrophysics and particle physics partnership, developed by NASA in collaboration with the U.S. Department of Energy, along with important contributions from academic institutions and partners in France, Germany, Italy, Japan, Sweden, and the U.S.
(( Actual Article: ))
WASHINGTON -- NASA has set June 11 as the new no-earlier-than target launch date for the Gamma-ray Large Area Space Telescope, or GLAST, from Cape Canaveral Air Force Station in Florida. The launch window extends from 11:45 a.m. to 1:40 p.m. EDT.
NASA initially had targeted June 7 for the GLAST launch aboard a Delta II rocket. Additional time was needed to replace the rocket's flight termination system battery, which indicated a problem Wednesday.
The GLAST prelaunch news conference is planned for 1 p.m. on Monday, June 9, at NASA's News Center at the Kennedy Space Center. Question-and-answer capability will be available from participating NASA locations.
Placement of remote cameras at Pad 17B is planned for 1 p.m., Tuesday, June 10. On launch day, news media should meet at 10:30 a.m. at the Space Florida parking lot outside Gate 1 of Cape Canaveral Air Force Station.
Launch commentary on NASA Television's Media Channel 103 will begin at 9:45 a.m. on June 11. For complete NASA TV downlink information, schedules and links to streaming video, visit: (( About GLAST: )) ... more -
BBC NEWS | Science/Nature | Hints of 'time before Big Bang'
"A team of physicists has claimed that our view of the early Universe may contain the signature of a time before the Big Bang." "A team of physicists has claimed that our view of the early Universe may contain the signature of a time before the Big Bang.�... more
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Does time run backwards in other universes?
"One of the most basic facts of life is that the future looks different from the past. But on a grand cosmological scale, they may look the same" "One of the most basic facts of life is that the future looks different from the past. But on a grand cosmological scale, they ma... more
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Quick overview of... the Universe!
Got a spare 5 minutes? Take an animated tour from the Earth out to the farthest reaches of the observable universe for a quick lesson in the structure, scale, and history of our beautiful cosmos. Got a spare 5 minutes? Take an animated tour from the Earth out to the farthest reaches of the observable universe for a quick lesson... more
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Hubble Deep Field Movie
Great 6 min video about the Hubble Deep Field imagery. The most detailed photos of the most distant, most ancient structures in the universe. When you look this deep into space, you're looking back in time - almost the beginning of the universe itself around 13 billion years ago. Now that's some reality TV! Great 6 min video about the Hubble Deep Field imagery. The most detailed photos of the most distant, most ancient structures in the u... more
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'Starquake' reveals star's powerful magnetic field
Some neutron stars have such powerful magnetic fields that they rip themselves open due to magnetic forces, a new study confirms.
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Cosmology
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Cosmology
