An exoplanet in the Trappist star system — a multi-planet star system similar to the solar system and just 39 light-years ...

This is caused by Earth's rotation, which creates centrifugal force — the same force that would cause you to fly off a ...

December’s full moon, dubbed the cold moon, will reach the crest of its full phase early Sunday. Here’s the best way to view ...

What planet appears close to the moon? It depends on the night, but throughout the year each of the five closest planets will ...

Earth's "second moon" won't be sticking around for Thanksgiving, but just as many of us will on Thursday (Nov. 28), it seems the asteroid was paying a visit to its relatives.