Rep. Anna Paulina Luna and Harvard Scientist Avi Loeb are calling for NASA to monitor the Manhattan-sized interstellar object ...

The space rock will make its closest approach—at a cosmically slight 183,000 miles from our planet—later today, according to ...

Jupiter is a gas giant and doesn’t have a solid outer surface like Earth. But astronomers can still assess its shape by ...

In a landmark observation by a team of international researchers, NASA's Juno spacecraft has, for the first time, clearly detected the auroras of Jupiter's moon Callisto. This discovery completes the ...

Large pieces of dark matter hitting Jupiter’s largest moon would form distinctive craters in its icy surface, and upcoming ...