Starting on September 29, 2024, Earth will briefly have a second “moon” as a small asteroid, 2024 PT5, gets captured by our planet’s gravity. This mini-moon will stick around for nearly two months before continuing its journey through space. What is a Mmini-moon, and How Does it Form?A mini-moon occurs when a small celestial object, such as an asteroid, is temporarily caught in Earth’s gravitational pull. Unlike our permanent Moon, these objects don’t stay in orbit for long. Their orbits are unstable, and after a brief stint as Earth’s companion, they eventually break free. This phenomenon is …