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The leading theory about the moon's origins, is that at the time the earth formed 4.5 billion years ago, other planetary bodies were also growing around the earth. As those planetary bodies were growing, they were also letting off debris. Some of that debris went into earth's orbit and aggregated into a moon.
Although our perception about the moon has largely changed over the past thousand years, the moon has remained exactly the same.
National Geographic says, "The moon is a dusty ball of rock." That's basically what it is. The moon is home to immense mountain ranges, some of the deepest craters known to man, seas of hardened lava, and according to some scientists, water.
Only one side of the moon is visible from earth. The side of the moon that we don't see, known as the "dark side of the moon", is one of the coldest places in the Solar System.
For centuries, humans have believed that the moon directly impacts our behavior. Scientists have found this to be true. The moon directly affects the environment within us and the environment around us.
Neil Armstrong and Buzz Aldrin were the first humans on the moon. Learn more about the moon landings in this inspring VOA documentary.
Daytime on one side of the moon lasts about 13 days and is followed by 13 days of night. When sunlight hits the moon's surface the temperature can grow as hot as 127 degrees celsius. During night, temperatures drop to negative 180 degrees celsius.
Scientists estimate that space travel will become possible by 2043. We've set a timer, as you can see below.
Information about each crater is located in the little tiny black box beneath the photo.