This stunning time lapse space video will astonish you

What does it feel like to fly over planet Earth?

The Frontier Is Everywhere – Carl Sagan’s “Pale Blue Dot” + NASA Imagery

The Known Universe – a dramatic tour drawn from Hayden Planetarium’s Digital Universe Atlas

Cosmic Journeys – How Large is the Universe?

John Hodgman’s digressions on aliens, physics, lost time, & love
 
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