Words that can be used to describe the moon include rocky, solid, round and bright. The moon's surface is covered in dried lava flows, dead volcanoes and impact craters.Know More
Scientists believe that the moon's crust is between 38 to 63 miles thick. On its surface, the moon contains craters, rock and soil, and not much of anything else. It makes one entire orbit around the earth every 27 days and has a thin atmosphere called an exosphere.
The moon lacks water, and its craters are known as impact basins caused by asteroid strikes. The same side of the moon is always visible from Earth.Learn more in Our Moon
No concrete evidence explains why there is a moon. The best hypothesis presented is the Giant Impactor hypothesis: It suggests that around 4.45 billion years ago, while the Earth was still forming, a large object hit the Earth at an angle.Full Answer >
The way to identify which of the phases the moon is in is based on which section of the moon's face is lit by the sun. The moon has eight phases, which happen in the same cycle over the course of a 29-day period.Full Answer >
The moon appears to wax and wane through different phases due to how much of its illuminated surface is visible from Earth. At any given time, half the moon is illuminated by the sun's light. Depending on where the moon is in relation to the Earth, the amount of illuminated surface changes. The ratio of illuminated surface to shadowed surface creates the phases.Full Answer >
There are varying theories on how the moon was created. Some scientists believe that it was created when a Mars-sized planet named Theia crashed into the Earth during the early years of the formation of the solar system.Full Answer >