For just a few months, Earth hosted a "second moon," much smaller than our faithful historical companion. This fleeting phenomenon, known as 2024 PT5, captivated astronomers before departing

Earth will say goodbye to an asteroid that has acted as a mini moon for the past two months. But astronomers say it will return again soon.

The idea that Earth has only one moon is considered to be true, but that isn't always the case. In fact, sometimes, it's had more moons than you'd expect.