Astronomers have studied 14 years of Hubble Space Telescope observations of Jupiter's icy moon Europa, and now suspect that ...

It's almost a new lunar phase.

Here's when to see a pair of massive letters shining on the lunar surface around May's first quarter moon phase.

NASA has unveiled early details of its Artemis III mission, which in 2027 could send astronauts to Earth orbit to set the ...

Venus and the moon will appear close together in the sky May 18. Here's how to see the celestial conjunction around the ...

A rare lunar sight is set to give skywatchers one more reason to look up before the month is over. The next full moon reaches peak illumination at 4:45 a.m. Eastern time on Sunday, May 31, and it will ...

May's full moon rises as flowers bloom across the northern hemisphere.

Neptune’s third-largest moon, Nereid, could be an intact survivor from the planet’s original satellite system, upending ...

A rare sight is returning to the night sky at the end of the month. The Blue Moon will make its appearance during the late ...