One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at its closest point to Earth in its orbit, and Hall had one question on his ...

Just four days after it passed in front of the Pleiades star cluster, the moon will cross paths with another noteworthy celestial object on Monday evening, Jan. 13, when it will cover the planet Mars, ...

A space probe flying past Mars captured images of the red planet's small, mysterious moon. While on a flyby of Mars, Hera was able to use three of its imaging instruments to capture images of Deimos, ...

Phobos, the oddly-shaped moon of Mars, has been captured in a series of stunning images gliding above the planet’s volcanic ...

A NASA rover captured images of a Martian eclipse that resembled a googly-eye peering down at the red planet. The space agency released photos and video Wednesday that show the Martian moon Phobos ...

Once in a while, you might look up and marvel at magnificent views of our moon, its surface dramatically lit by our sun’s light. But have you ever paused to wonder what other moons might look like ...

The Moon passes 1.4° north of Mars at 6 A.M. EDT; the two are visible together this evening, slowly setting in the western sky and visible for a few hours after sunset. Both now lie in western Leo, ...

The moon and Mars will share a close approach in the night sky tonight (Nov. 20), coming close enough together for a nice pairing for the naked eye or binoculars. As seen from the United States, the ...

The full moon will pass in front of the planet Mars on Monday night, Jan. 13. For the Duluth region it will cover the planet for just over an hour from 8:13 to 9:12 p.m. local time. Earlier in the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Each Monday, I pick out North America’s celestial highlights ...