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How Big is Apophis? - Universe Today
Question: How Big is Apophis? Answer: In case you haven’t heard, Asteroid 99942 Apophis is a near Earth asteroid that astronomers think will make a close flyby to the Earth in 2029. When its trajectory was first calculated back in 2004, it had one of the closest visits to Earth astronomers had seen, and had … Continue reading "How Big is Apophis?"