T he Moon is the only natural satellite of Earth : orbit : 384,400 km from Earth diameter : 3476 km mass : 7.35e22 kg C alled Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies. ... The Moon's gravitational attraction is stronger on the side of the Earth nearest to the Moon and weaker on the opposite side. ... From our perspective on the Earth's surface we see two small bulges, one in the direction of the Moon and one directly opposite. ... Earth .. ...