"When people find out about that they're going to say 'who put that there?'," Buzz Aldrin once said of the monolith.

Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a ...

On January 29, 1989, a Soviet space probe named Phobos 2 arrived in orbit around Mars. This was the last space mission ...

Deimos is Mars' outer moon. It's a tiny, irregularly shaped moon and smaller than Mars' other moon, Phobos. Despite being unspectacular, Deimos remains a fascinating mystery. Deimos is one of only ...

And some sky-gazers will be able to glimpse a cosmic magic trick when the moon appears to pass in front of Mars. The full moon will be at peak illumination at 5:27 p.m. ET Monday but will appear ...

And some sky-gazers will be able to glimpse a cosmic magic trick when the moon appears to pass in front of Mars. The full moon will be at peak illumination at 5:27 p.m. ET Monday but will appear full ...

The first full moon of the year, known as the wolf moon, will occult Mars, reaching peak illumination Monday and appearing big and bright over the weekend. The year’s first full moon peaks on ...

The January full moon, also known as the wolf moon, will completely cover the red planet, Mars, but not before the red planet shines as bright as possible near the moon. When will Mars be ...

The moon performed a cosmic ballet with Mars this week. On Monday evening (Jan. 13), the Full Wolf Moon passed in front of Mars in what's known as a lunar occultation, during which another ...

Ian Whittaker does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Trump confidant Elon Musk wants NASA to drop its ambitious plans to return to the moon and instead head straight to Mars. Congress is ready to put up a fight. Republican and Democratic lawmakers ...