Earth has 1 Moon and 2 Co-Orbital Satellites

You probably already know that Earth has one moon (aka. The Moon). There is a lot that is known about this object, but did you know that there are also two other asteroids in co-orbital with the Earth? These two asteroids, named as 3753 Cruithne and 2002 AA29, are a member of a larger group of asteroids known as Near-Earth Objects (NEOs).

One of the interesting facts about Earth, Asteroid 3753 Cruithne, which is also known as "Earth's second moon," is 5 km across. It has a coordinated orbit with Earth, but does not really orbit it. It also has an orbit that gives the impression that it is moving in the same direction as the Earth, but it is actually traveling in a different direction around the Sun.

In contrast, 2002 AA29, which is only 60 meters across and orbits the Earth in a horseshoe shape, passes within 95 years of the planet. It will seem to circle Earth in a resemblance to a satellite orbit in around 600 years. It might be a good target for a space exploration expedition, according to scientists.