Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.

The moon dims, the meteors fly, and the planets dance—these are the most exciting celestial events happening this month.

There’s a bunch of meteor showers coming up this spring and an astronomer from Greenwich has the low down on how you can see them.

There’s a bunch of meteor showers coming up this spring and an astronomer from Greenwich has the low down on how you can see ...