Earth Is Temporarily Getting a Second ‘Moon’

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By Rebecca Schneid, Time. 

Excerpt: Starting next week, the moon, Earth’s closest celestial body, will be joined by a new neighbor: a second moon. From Sept. 29 until Nov. 25, astronomers calculate that 2024 PT5— which is what scientists think is an asteroid but have dubbed a “mini-moon”—will be looping around Earth. It will eventually break free of the planet’s gravitational orbit. Sadly, at just about 10 meters, the mini-moon will be extremely hard to see from Earth, but its presence will be there nonetheless for almost two months. The asteroid, which was discovered on Aug. 7 by NASA, originated from the Arjuna asteroid belt, where it will likely return once it leaves Earth’s orbit. “Earth can regularly capture asteroids from the Near-Earth object (NEO) population and pull them into orbit, making them mini-moons,” researchers Carlos de la Fuente Marcos and Raúl de la Fuente Marcos wrote in their published research.... 

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