The Moon is the only natural satellite of the Earth. It is in the distance of 384,400 kilometers (238857 miles) away from the Earth. It orbits the Earth once every 27.3 days. It has no global magnetic field.
- It is the fifth-largest natural satellite in the Solar system. It is moving away from Earth by 3.78 cm (1.48 inches) a year. It is not a perfect sphere in shape.
- A lunar eclipse occurs when the Earth is between the Sun and Moon.
- Its temperature is very hot in the daytime about 100 degrees Celsius. At night, The temperature falls to minus 173 degrees Celsius. This variation is because it has no atmosphere to hold the heat.
- The diameter of the moon is 3, 475 km (2, 159 miles) which is roughly four times smaller than Earth. It has only one-sixth of Earth gravitational force. Its surface area is 14,658,000 square miles or 9.4 billion acres.
- Neil Armstrong was the first person to step on the Moon on July 20, 1969.
- Mons Huygens is the tallest mountain on the Moon. It is about 5 km (3.3 miles) high and is located in the Montes Apennines.
- It rotates at 10 miles per hour compared to the earth’s rotation of 1000 miles per hour.
- When a month has two full moons, the second one is called a blue moon. It is not in blue color.
- About 49 moons would fit inside the Earth. It is not a self-luminous body. It just reflects the rays coming from the Sun. The Sky always appears black from its surface.
- The Lunar Perigee is when the Moon is closest to the Earth during its monthly orbit. The Lunar Apogee is when it is furthest from Earth. Generally, it looks about 14% larger and 30% brighter at its perigee compared to its apogee.
- Only 59% of its surface is visible from earth.