Images of a supposed "Smiley Face Moon" have been popping up on social media. Here's what's real about this week's sky show.

Picture: Jeremy Ng/Getty Images The two-year-old award is similarly contentious ... But Private Harry, unbeaten in five ...

MIT astronomers have discovered a planet some 140 light-years from Earth that is rapidly crumbling to pieces. The ...

NEW YORK — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked-eye spectacle. Comet SWAN, hailing from the Oort Cloud ...

The newest comet was discovered by amateur astronomers, who spied it in photos taken by a camera on a spacecraft operated by NASA and the European Space Agency to study the sun. Advertising The ...

And as it decays, it is leaving behind a tail of matter like a comet. The planet BD+05 4868 A is located 140 light-years away, and is around the mass of Mercury. Unlike Mercury, though ...

A planet 140 light-years from Earth that is rapidly falling apart has been spotted by astronomers after they detected an ...

Although the planet is about the size of Mercury, its orbit is about 20 times closer to its ... To the astronomers observing it, the planet looks like a huge comet with a long tail of debris. That ...

Comet SWAN, a newly discovered green comet from the Oort Cloud, has likely disintegrated after its recent solar passage, diminishing hopes for naked-eye visibility. Discovered by amateur ...