For the next two months, Earth will have a cosmic guest. A so-called “mini moon” will join our actual moon in circling the planet until Nov. 25.
What exactly is the mini moon? It’s actually a small asteroid –– only 33 meters across, the size of a bus and 300,000 times smaller than Earth’s — that has temporarily entered Earth’s gravitational pull, says Jacqueline McCleary, an assistant professor of physics at Northeastern University.
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Photo by NASA
Physics