NASA launched satellite that looks like disco ball into space 40 years ago. ...

Amateur astronomer Chris Schur captured the shot of a lifetime when he documented the comet 252P/LINEAR in all its turquoise glory on the morning of April 2. Seen in the gallery above, the image was after the comet made its close pass of Earth back in early April. Using an astrograph set at a 39-minute exposure, Schur got the amazing image of the comet surrounded by brilliant stars. "I was just able to glimpse this object [with the] naked eye,...

When the full moon shines in the night sky, it's easy to see the varied landscapes and vast craters on its surface. But not every crater on the moon is visible to the naked eye; there are some parts we never see at all. Now, a team of researchers has used UV light to see the "dark" side of the moon, and they found something rather surprising. The moon has two craters that are much newer that astronomers expected, the...