"NASA's planetary defense budget is less than one percent of the total space agency. That's not enough to ever do anything." ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere. That would make it the solar ...

A comet born around another star is carrying water unlike anything ever measured in our solar system. Observations of ...

The Moon’s south pole may be hiding more than ancient darkness. New research suggests its frozen secrets were not created in ...