Earth will have a second moon orbiting the planet when it grabs a tiny astroid in its gravitational pull later this month, according to a new study. The big picture: The "mini-moon" will be around from Sept.

For nearly two months this year, Earth’s moon will have company — a second moon. Technically, it isn’t a second moon, but rather an asteroid from the Arjuna asteroid belt — named 2024 PT5 — that will be caught in the Earth’s gravitational pull,