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rbayla rbayla
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2 weeks ago

Using a cosmic calendar where the big bang happened at midnight January 1, at what time did human civilization emerge?



1 hour before midnight on December 31



30 minutes before midnight on December 31



30 seconds before midnight on December 31



11 seconds before midnight on December 31

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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cskeen80cskeen80
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2 weeks ago
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rbayla Author
wrote...

2 weeks ago
Good timing, thanks!
wrote...

Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
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2 hours ago
Thanks for your help!!
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