If NASA's Constellation program is going to take astronauts to the moon or Mars, Obama will have to increase its budget, the Augustine report says.
An artists rendering image shows an exoplanet 6 times the Earth circulate around its low-mass host star at a distance equal to 1/20th of the Earth-Sun distance. European astronomers announced they had found 32 new planets orbiting stars outside our solar system on Monday. They believe their find means that 40 percent or more of Sun-like stars have such planets. The host star in this image is a companion to two other low-mass stars, seen in the distance.
Three probes, including a NASA instrument on India's Chandrayaan-1 lunar orbiter, have detected water molecules in minerals on the moon's surface.
A rare storm system over Titan's tropics help explain the region's unique liquid-carved landscape.
The US will launch the Kepler spacecraft Friday to look for other Earths.
The pros are turning major amounts of telescope glass on comet Lulin; the rest of us can see it through binoculars
A lively account of the ‘exile’ of Pluto, everyone’s favorite ex-planet.