NASA's Juno probe is the first solar-powered spacecraft to the outer solar system.

The close pass of the asteroid Eros this week allows astronomy buffs to measure the size of the solar system.

See photos of the asteroid Eros taken by NASA's NEAR space probe in 2000, and other observers.

Scientists will study diet & nutrition for "astronauts" who spend four months in a mock space capsule.

Not since 1978 have so many people wanted to be a NASA astronaut.

The Pantanal, a stunning biodiversity sanctuary in central-western Brazil, is threatened by intensive farming and deforestation, a leading environmental group warned as the world marked World Wetlands Day on Thursday.

The 21-mile long 'God of Love' space rock made its closest approach to Earth (15 million miles away) since 1975 on January 31st, 2012. NASA's Near Earth Asteroid Rendezvous - Shoemaker (NEAR) mission landed on the asteroid on February 12, 2001.

NASA's Suomi NPP satellite is snapping amazing views of Earth from space, but there's a secret to the photos.

Powered test flights should occur this summer.

(PhysOrg.com) -- Scientists at the Naval Research Laboratory (NRL) are part of an international team that has pooled their radio observations into a database, producing the highest precision map to date of the magnetic field within our own Milky Way galaxy.