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Scientists have yet to pin down the asteroid's exact size, but it's not that large, likely between 14 feet and 32 feet (4.4 and 9.9 meters) long, according to CNEOS. This potentially RV-size asteroid was discovered only last week, on Sept. 18, by the Mount Lemmon Survey in Arizona, and announced the next day by the Minor Planet Center, a NASA-funded group that monitors minor planets, comets and natural satellites. (It's not unusual to find unknown asteroids; in September alone, the Minor Planet Center has announced the discovery of 244 near-Earth objects.) Passing by Earth will actually be a life-changing...

The massive space rock, which is known as 310442 (2000 CH59), will be closest to our planet on December 26 at 2:54 a.m. EST, according to NASA. The space agency's Center for Near Earth Object Studies (CNEOS) estimates its diameter will be in the range of 919 to 2,034 feet. Paul Chodas, director of CNEOS), told Newsweek. "So it is prudent to keep tracking [them] for decades to come and to study how their orbits might be evolving." CH59 will be about 4.5 million miles from our planet the morning...