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28-May-2020 Thursday
The Tunguska explosion could have been caused by an asteroid that is still orbiting the Sun
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The Tunguska explosion could have been caused by an asteroid that is still orbiting the Sun
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Meteorite
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Tunguska meteorite
15-November-2016 Tuesday
First of NASA's GRACE Follow-On satellites completed
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First of NASA's GRACE Follow-On satellites completed
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