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![Выброс гравия с астероида Бенну](https://images.astronet.ru/pubd/2020/09/16/0001695239/BennuEjecting_OsirisRex_960.preview.jpg)
15.09.2020
Why does asteroid Bennu eject gravel into space? No one is sure. The discovery, occurring during several episodes by NASA's visiting ORISIS-REx spacecraft, was unexpected. Leading ejection hypotheses include impacts by Sun-orbiting meteoroids, sudden thermal fractures of internal structures, and the sudden release of a water vapor jet.
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