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550W（sky·忆） replied to the thread Basic Error: The accelerating Universe conclusion - reason.lLate greeting: Merry Christmas -
550W（sky·忆） reacted to billslugg's post in the thread Question Humans 11th Successful Asteroid Impact Warning with
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The probability of an asteroid is very small but must be protected against. Only by knowing their exact orbits can we make plans. We... -
550W（sky·忆） replied to the thread Question black holes.I had a bold idea that in the next 50 to 150 years we might be able to send detectors to black holes.:cool:
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550W（sky·忆） replied to the thread Question Humans 11th Successful Asteroid Impact Warning.Do we really need early warning of asteroid impacts? Is there a high probability that Earth will encounter an asteroid in space? If one...
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550W（sky·忆） replied to the thread Question Humans 11th Successful Asteroid Impact Warning.Based on global observations compiled by the International Small Planet Center, the Purple Mountain Observatory predicts an entry time...
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China successfully warned of asteroid impact, so far no impact on Earth, what happens next depends on the latest news
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