The most popular theory regarding lunar formation is that a Mars-sized planetoid slammed into the Earth and flung molten debris into orbit around 40 million years after the solar system was created, according to scientis... More »

According to, scientists have three main theories about the formation of the moon. They are the giant impact hypothesis, the capture theory and the co-formation theory. More »

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. More » Science Astronomy Our Moon

According to Astronomy Magazine, the moon turns red during a lunar eclipse because it is illuminated by the light that refracts through Earth's atmosphere. While the moon may pass into Earth's umbral shadow, the light th... More »

The solar system includes the sun and anything that moves in an orbit around the sun, according to the National Aeronautics and Space Administration. This includes planets, moons, asteroids, meteoroids, comets and other ... More » Science Astronomy

The official website of NASA for lunar explorations provides photographs of the Earth's moon. Some news media websites and companies focused on the space sector, such as and, provide pictures of th... More »

The moon orbits the Earth at approximately 2,288 miles per hour and completes one full orbit every 27.322 days. Additionally, the moon takes approximately 27 days to complete one full rotation on its own axis, called its... More »