 The unique Kaidun meteorite that fell on a Soviet military base in Yemen in 1980 has been hypothesized to be a piece of Phobos, but this has been difficult to verify because little is known about the exact composition of Phobos.A person who weighs on Earth would weigh about standing on the surface of Phobos.Geological features on Phobos are named after astronomers who studied Phobos and people and places from Jonathan Swift's "Gulliver's Travels".