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Topic: For A Billion Years, A Day On Earth Was Only 19 Hours Long (Read 31 times) previous topic - next topic

For A Billion Years, A Day On Earth Was Only 19 Hours Long

For A Billion Years, A Day On Earth Was Only 19 Hours Long

[html]At one point, not all of us had the same amount of hours in a day. Learn what controls the length of a day.[/html]

Source: For A Billion Years, A Day On Earth Was Only 19 Hours Long (http://ht**://www.discovermagazine.c**/the-sciences/for-a-billion-years-a-day-on-earth-was-only-19-hours-long)