A mysterious moon, a vanished Soviet spacecraft, and monolith-like objects standing alone in the Martian dust—what’s really ...

One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at ...

It’s small, even for a moon, measuring only around 16 miles across, and its oblong shape gives it plenty of personality. Astronomers have been interested in Phobos for some time.

A new panorama from NASA's 2001 Mars Odyssey orbiter shows one of the red planet's biggest volcanoes, Arsia Mons, poking through a canopy of clouds just before dawn.

Pascal Lee is internationally recognized for his efforts to advance the human exploration of Mars, in particular via its moons Phobos and Deimos. He has led, or participated in, the development of ...

A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million when it goes up for ...

Examples: from Miami, closest approach between Mars and the moon is at 10:13 p.m. EDT. Separation is 15 arc minutes or 0.48, which is just under one-half of a moon's width from Mars to the upper ...

The “man in the moon,” however, is in my opinion a poser. I’ve seen various explanations for why people see a face in the moon’s chaotic, giant-impact-sculpted mix of bright highlands and ...

This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between the moon and Mars.

A European Mars probe captured a stunning view of a Martian crater that's rich in many of the features that help scientists reconstruct the planet's dynamic history over billions of years.