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how long do bubbles last?
Started by paul.fr |
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How long do fundamental particles last?
Started by thedoc |
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How long does a gravitational wave last?
Started by Harri |
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How long does it take a comet to form?
Started by thedoc |
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How long does it take for a star to become 'lit'?
Started by Karen Miller |
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How long does it take for heat to reach us from the Sun?
Started by Phil Kenyon |
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How long does it take the Sun to cross the sky?
Started by Ighsaan |
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How long does the present last?
Started by thedoc |
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How long for a 360?
Started by Geezer |
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How long has the universe been habitable?
Started by Dom Duggan |
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How long is a piece of string?
Started by Don_1 |
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How long is one second?
Started by guest39538 |
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How long is the solar day?
Started by Atomic-S |
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How long will it take to find life on other planets?
Started by Yasser |
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