The vast majority of Earth's meteorites come from these three asteroid families, according to researchers.
It takes the Earth one year to orbit all the way around the sun. But the sun’s path around the Milky Way is much bigger. It ...
A NASA spacecraft has set sail for Jupiter and its moon Europa, one of the best bets for finding life beyond Earth.
A dwarf planet hiding right in the middle of our solar system could be a surprising source of frozen water, astronomers ...