A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

The second stage of SpaceX's Falcon 9 rocket captured an amazing view of Earth during the launch of the Intelsat 40e ...

There’s a terminator in our midst. Squinting through a telescope, I see it. The fuzzy line (in non-astro speak) where the ...

This 2022 satellite photo shows the summit of "one of the world's most dangerous volcanoes," Mount Vesuvius, peering up ...