The long shallow grooves lining the surface of Phobos are likely early signs of the structural failure that will ultimately destroy this moon of Mars. Orbiting a mere 3,700 miles (6,000 kilometers) ...

The Martian moon Phobos is locked in an orbital decay, gradually inching closer to Mars until it faces a destructive fate. Recent studies show that the moon's surface already displays signs of ...

Phobos, it seems, is not long for this universe — at least on the large cosmic timescale. Astronomers have long known that Phobos, the larger and nearer of the two martian moons, is slowly spiraling ...

The Martian moon Phobos has a lumpy, nonspherical shape that suggests it may be a captured asteroid. (ESA/DLR/FU Berlin (G. Neukum)) The origin of the two small moons of Mars, called Phobos and Deimos ...

Understanding the process could help reveal the moon's strange origins. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The eccentric orbit of ...

Six images of the Martian moon Phobos captured by NASA's Odyssey spacecraft. Three new images were released this month, giving scientists a fuller picture of Phobos' surface as it waxes and wanes.