Forbes contributors publish independent expert analyses and insights. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. Mars' mysterious moons of Deimos and Phobos have long ...

On March 27, 1989, the Soviet Union's Phobos 2 mission to Mars' moons ended in failure. But the whole mission was definitely not a failure. Phobos 2 arrived in Mars orbit two months earlier and had ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. As Phobos, one of ...

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) ...

Both Phobos and Deimos are observable from the Martian surface. Phobos, larger and closer to Mars than Deimos, exhibits noticeable waxing and waning phases within a single appearance due to its rapid ...

Earth isn't the only planet experiencing spectacular solar eclipses as moons pass in front of our solar system's sun. Two months before a total solar eclipse is expected to shroud a long swath of ...

Japan’s space agency (JAXA) is sending a mission to travel to Mars which will survey the Red Planet’s two moons, Phobos and Deimos. The spacecraft will explore both moons and collect a sample of ...