ScienceAlert - 6 天前查看原文

'City Killer' Asteroid's Origin Traced to an Unexpected Part of The Solar System

2024 YR4 hails from the middle of the main asteroid belt that hangs out between the orbits of Mars and Jupiter – and it was pushed towards Earth by a gravitational interaction with Jupiter, which usually protects the inner Solar System from flying rocks.
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'City Killer' Asteroid's Origin Traced to an Unexpected Part of The Solar SystemScienceAlert - 6 天前
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