Asteroid 2019 OK, which is thought to be between 187 and 427 feet in diameter, came within 43,500 miles of colliding with our planet – a distance closer than the moon – on Thursday at around 11. Experts said if the asteroid had hit Earth the impact would have been similar to the bang of a “very large nuclear weapon”. The rock was only spotted a couple of days before it flew past because it was flying in our direction from the Sun. The asteroid was one of four that flew by the Earth with 2019 OK being the largest and closest. Of the three other rocks, Asteroid 2019 OD was the largest, believed to be between 170 feet and 393 feet across.
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