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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
The day Earth smiled, a global moment of cosmic self-awareness
NASA's Cassini spacecraft will be photographing Earth through the rings of Saturn on Friday, July 19, and - if you're in the Americas - you can join the shot.
July 19, 2013
Do two suns make planets more suitable for life?
The answer could change estimates of the number of planets harboring life in our galaxy and help select future targets in the search for life.
July 19, 2013
New discovery about neutrinos
The discovery could ultimately help scientists explain why the universe contains matter but very little antimatter.
July 19, 2013
Link between stars’ ages and their orbits
Astronomers have determined the orbital motion of two distinct populations of stars in an ancient globular star cluster, offering proof they formed at different times.
July 19, 2013
Last night’s moon: Two great pics
A large waxing gibbous moon is lighting up the evening sky now, heading for another supermoon on July 22.
July 19, 2013
