Surprise! NASA has confirmed that Earth has a new Moon!

Earth’s been hiding a little secret from its partner, the moon. Turns out the Earth has had a “mini-moon” on the side for over a century, and even though the relationship has been exposed, the partnership is likely to continue for centuries to come. This newly discovered moon is smaller than our moon and goes around the Earth astonishingly irregularly, but still, two is quite better than one. This second “moon,” is actually an asteroid called 2016 HO3 and it is currently locked into “a little dance” with Earth. It's being called as "Quasi-Moon".

This new moon has been dancing around for over a century now. Its orbit is extremely elliptical, affecting it to go a wee bit off tangent—between 38 and 100 times the distance of Earth’s primary moon—and bob up and down across Earth’s orbital plane. This new moon is tilted by about 8° and it orbits the Sun for 365.93 days, which is a little longer than Earth’s 365.24 day-long year.

Learn more here.