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发帖数: 1994 | 1 A Year of Assessing Astronomical Hazards
Drawing Credit: Dan Durda (SWRI)
Explanation: Could an asteroid destroy civilization on Earth? Mountain-sized space rocks
could potentially impact the Earth causing global effects, and perhaps even be mistaken for a
nuclear blast of terrestrial origin. Such large impacts are rare but have happened before.
Modern telescopes have therefore begun to scan the skies for signs of approaching celestial
hazards. Over the past year, projects suc |
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