NASA Jet Propulsion Laboratory. Asteroid Apophis news! Based on new data from recent flyby, the risk of a 2036 impact has been ruled out. ... <看更多>
apophis jpl 在 Has anyone back-calculated previous close encounters ... 的推薦與評價
The JPL Small Body Database lists Apophis close approaches dating back 100 years before discovery. Three fairly close ones were: 1907-04-13, 0.029 au ... ... <看更多>
apophis jpl 在 Apophis Asteroid Investigation - JPL - NASA - YouTube 的推薦與評價
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