How Much Stuff Is In A Light Year?

Name: How Much Stuff Is In A Light Year?
Uploaded: 2014-04-10T17:07:41+00:00
Duration: 3 min 50 s
Channel: universetoday
Description: Because the Moon is tidally locked to the Earth, we only see one side of it. But what's on the other side of the Moon?

universetoday

Because the Moon is tidally locked to the Earth, we only see one side of it. But what's on the other side of the Moon?

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