Mars – rises as expected in the east but slowly. Despite the 30-hour orbit of Deimos, 2.7 days elapse between its rise and set for an equatorial observer, as it slowly falls behind the rotation of Mars. Because the orbit of Phobos is below synchronous altitude, the tidal forces from the planet Mars are gradually lowering its orbit. In about 50 million years, it could either crash into Mars's surface or break up into a ring structure around the planet. The origin of the two moons is not well understood. Their low albedo and carbonaceous chondrite composition have been regarded as
Two Moons Two Moons Two Moons (1847–1917), or "Ishaynishus" (Cheyenne: "Éše'he Ôhnéšesêstse"), was one of the Cheyenne chiefs who took part in the Battle of the Little Bighorn and other battles against the United States Army. Two Moons was the son of Carries the Otter, an Arikara captive who married into the Cheyenne tribe. Perhaps known best for his participation in battles such as the Battle of the Rosebud against General Crook on June 17, 1876, in the Montana Territory, the Battle of Little Big Horn on June 25, 1876 and what would prove to be his last battle, the Battle of