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

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 ...

It's almost a new lunar phase.

The team still can't confidently rule out the existence of Europa's water vapor, especially as similar plumes have been more ...

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

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

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

Neptune's moon Nereid may be the lone survivor of an ancient cataclysmic event, according to new findings from the James Webb ...

On May 22, the moon will reach its first quarter phase in the meticulous and resourceful sign of Virgo ...

The route is not built for speed. During Artemis 2, the Orion spacecraft followed a roughly 10-day free-return path, flying ...