The Red Planet and its tiny moon Deimos were recorded at a very near distance as the asteroid-chasing spacecraft completed a flyby on Wednesday.

The results of Hera's fly-by could ultimately tell us whether Deimos is a captured asteroid or made from debris from a giant ...

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - ...

Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery. What little was known about them had been mostly gleaned from analyzing ...

A total eclipse of the Moon is the highlight of this month, visible across North and South America. Venus remains very bright ...

Tomorrow (Feb. 28), the one-day-old moon will pass in front of Mercury for observers in Australia and the south Pacific, and on March 1 the moon will make a close pass to Venus. Want to see ...

“At first, I thought it was just a pimple, but by the end of the day, it had grown and formed a crater,” Tom said. The next morning, that same small pimple had developed into a large scab and ...

However, you'll have to wait until Friday, February 28 for Mercury to appear just above the horizon, and complete the line-up. Mars, Jupiter, Mercury, Venus, Saturn, Uranus, Neptune and Mercury will ...

One of Grace's hops is expected to be into a small crater about a quarter-mile from the landing site, which would mark the first time that an area where the sun has never shone has been explored ...