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

In a first, ESA\'s Mars Express orbiter imaged the Martian moons Phobos and Deimos together on Nov. 5, 2009. Phobos, the larger of the two moons, orbits closer to Mars, circling the planet every 7 hou ...

Two years into one of NASA’s most ambitious missions, the Perseverance rover and Ingenuity helicopter continue to ...

The ringed planet sports over 60 moons. Mars has just two, Deimos and Phobos. According to NASA, Phobos is on track to be pulled apart within 30 to 50 million years, ...

NASA’s Odyssey orbiter captured stunning new infrared images of the bizarre Martian moon Phobos. Scientists have debated the origins of Phobos, and some believe it is either a chunk of Mars that ...

Mars' moon Phobos may actually be a comet — or at least part of one — that was gravitationally captured by the Red Planet long ago, a new preprint study based on previously unpublished photos ...

Efforts to reach the Martian moon Phobos have long been outshined by missions to the red planet itself. Now, scientists in Russia, Canada and the U.S. are preparing their own missions to the ...

Mars's moons Phobos and Deimos are a little different from the other moons of the solar system. While not as strange as the Earth's possible "ghost moon" (aka a Kordylewski cloud), the moons are ...

However, unlike the moon, Phobos' orbit around Mars is not stable: The tiny satellite is trapped in a death-spiral and is slowly falling towards the Martian surface at a rate of 6 feet (1.8 meters ...

Phobos, which is an oblong, crater-covered moon measuring just 27 kilometers across at its widest point, might be just the right place if we want to learn more about the history of the Red Planet ...

Phobos and Deimos could have formed from asteroid debris, a new study suggests. ... Mars’ moons could be the remains of an ill-starred asteroid that got too close to the Red Planet.