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Van Allen radiation belts have a particle accelerator
Scientists knew something accelerated particles in the belts to 99 percent the speed of light. New results show the acceleration energy comes from within the belts themselves.
July 26, 2013
New sharp image of Whirlpool Galaxy
A new camera on a telescope at Kitt Peak National Observatory near Tucson has given us this beautiful view of the Whirlpool, which is also called M51.
July 26, 2013
New discoveries about quasars
“For the first time, we are able to see the actual extent to which these quasars and their black holes can affect their galaxies," - Astronomer Kevin Hainline
July 25, 2013
Limits to galactic growth
When a galaxy makes too many stars too quickly, it reduces its capacity for making stars in the future. Now astronomers have the first detailed images of this self-limiting galactic behavior.
July 25, 2013
Want to find distant planets? Our own sun offers clues
A new study teaches us about the formation of our own solar system, and might also aid in the search for other stars orbited by habitable planets.
July 24, 2013
Spitzer sees long tail, strong gas emissions from Comet ISON
Although the comet is behind the sun now - not visible from Earth - a space telescope has seen dust and carbon dioxide steadily “fizzing” away from it, in a tail about 186,400 miles long.
July 24, 2013
Ancient snowfall likely carved Martian valleys
Researchers at Brown University have shown that some Martian valleys appear to have been caused by runoff from orographic precipitation.
July 23, 2013
Cosmic whirl
The center of galaxy NGC 524, 90 million light-years from Earth in the constellation Pisces, as seen by the Hubble Space Telescope.
July 23, 2013
Official trailer for Neil deGrasse Tyson’s re-release of Cosmos
Neil deGrasse Tyson's version of the classic Cosmos series will be coming to a TV screen near you in 2014.
July 21, 2013
Video: Ride with the Cassini spacecraft orbiting Saturn
It's eight years of time and 200,000 images compressed into 4 minutes of video. An awesome way to experience Cassini's tour of Saturn.
July 21, 2013
