In June, NASA is sending two satellites, the Lunar Reconnaissance Orbiter (LRO) and Lunar CRater Observation and Sensing Satellite (LCROSS), to the Moon to prepare for a future astronaut landing.
The Hubble Space Telescope discovers something new about star formation in dwarf galaxies.
For its 19th anniversary, the Hubble Space Telescope has shot the peculiar group of galaxies Arp 194.
Astronomers have spotted a rare, complex cosmic collision of four galaxy clusters. A spectacular composite image from NASA's Chandra X-Ray Observatory and Hubble Space Telescope revealed the pileup—and its likely source.