Two rocks that crashed to Earth from space in 1998 are the 1st meteorites found to contain both liquid water and a mix of complex organic compounds such as hydrocarbons and amino acids.
Earth and Ceres will be closest for 2018 on February 1. Ceres hasn't been this close since 2009. Start looking for this tiny world - largest body in the asteroid belt - now.
What's a planet? What's a dwarf planet? What's a brown dwarf? In recent years, astronomers have grappled with these definitions. The newest proposal comes from Johns Hopkins.
The Earth and moon are like mirrors to each other in that - when we see a 1st quarter moon in our sky - those on the moon would see a last quarter Earth.
A powerful earthquake struck 174 miles (280 km) southeast of Kodiak, Alaska, early on January 23. Tsunami watches or warnings were issued - later canceled - for western North America and Hawaii.
Yes, the Orion Nebula is a star factory, but a new deep survey has revealed 17 brown dwarf companions to red dwarf stars, a brown dwarf pair, a brown dwarf with a planetary companion plus ... 3 giant planets.