October's full moon will have some company this month now that a mini-moon is in Earth's orbit. Here's what you should know about the second moon.

This month, Earth will briefly gain a second moon, a small asteroid known as 2024 PT5. You'll need some special equipment to see it!

Earth gained a temporary mini-moon for a period of two months, but the origin story of our very own Moon remains a mystery. For decades, scientists believed the Moon formed from debris after a collision between a young Earth and another celestial object.