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 ...

It's possible that Mars' moons were originally asteroids that were captured by the planet's gravitational pull. There's also ...

Phobos and Deimos, the moons of Mars, are seen by the Mars Odyssey orbiter in 2018. A new study suggests the moons are leftovers from a larger, shattered Martian moon.

The origin of Phobos and Deimos, the two Martian moons, has been a mystery to astronomers. These two bodies are a fraction of the size and mass of the Moon, measuring just 22.7 km (14 mi) and 12.6 ...

Phobos and Deimos may harbor clues to Mars’ violent past. A new theory introduces the idea that Mars' two moons, Phobos and Deimos, were created after an intense Martian collision.

Phobos and Deimos – these names from Greek mythology were given to the moons of our neighbouring planet Mars, discovered in 1877 by the US astronomer Asaph Hall.Besides Earth's Moon, they are the only ...

Phobos will appear in the martian sky as bright as magnitude –9 this month, while Deimos will peak at magnitude –5. Phobos is so close to Mars and orbits so quickly — roughly once every ...

The red planet Mars, fourth from Earth's sun, has two little moons: Phobos and Deimos.Neither is anything like Earth's moon: small and irregularly shaped, astronomers have long believed that they ...

Phobos and Deimos; The Moons of Mars. Posted: June 20, 2025 | Last updated: June 20, 2025. Embark on an interplanetary journey with us as we explore the mysterious moons of Mars, Phobos and Deimos!

Deimos is also about 2.5 times farther from Mars than Phobos, making it look like a pebble against the Sun compared to Phobos’ large, potato-shape silhouette.

Understanding the composition and make-up of Deimos is important, because we don't understand the origins of either of Mars' ...

The larger moon, Phobos, tops out at about 17 miles across at its widest point, and Deimos is only about half that size. ... unless Mars and Deimos built themselves from the same material.