1. The diameter of the Moon is 2,160 miles (3,476 kilometers).
2. The average distance between Earth and its Moon is about 238,900 miles (384,000 kilometers).
3. The time taken by Moon to complete one rotation and one revolution is the same - about 27.3 days. This is why, from Earth, we always see the same side of the Moon.
4. The surface gravity of the Moon is only one-sixth that of Earth.
5. The Moon's gravitational pull on Earth is the reason behind the phenomenon of rise and fall of ocean tides.
6. There is no water and no air on Moon.
7. From earth, only 59 percent of Moon's surface is visible.
8. The Moon is the only extraterrestrial body to have been visited by humans. It is also the only body from which samples have been taken.
9. There is no global magnetic field on the Moon.
10. The first unmanned vehicle to orbit the Moon was sent in 1966, under the name Luna 10.
11. The surface of the Moon is covered with craters, basins, and cratered highlands, called terrae.
12. The soil that covers the Moon is composed of rock fragments and fine dust grains. It is known by the name of 'regolith'.
13. The total atmospheric mass of Moon is less than 104 kg.
14. Lunar eclipses occur near a full moon, when the Earth is between Sun and the Moon.
15. During its brightest phase i.e. at "full moon", the Moon has an apparent magnitude of about −12.6.
