Today's Sunlight Was Produced Before the Dawn of Human Civilization | How the Universe Works

submitted by King on 01/25/15 1

It may take light as long as a million years to escape from the sun's fiery, chaotic interior. From there, it travels 93 million miles to Earth at a speed of 186,000 mph--a trip that takes 8 minutes. | For more How the Universe Works, visit science.discovery.com/tv-shows/how-the-universe-works/#mkcpgn=ytsci1 Catch all new episodes of HOW THE UNIVERSE WORKS Wednesdays at 9/8c on Science Channel! Subscribe to Science Channel! | www.youtube.com/subscription_center?add_user=sciencechannel Check out SCI2 for infinitely awesome science videos. Every day. | bit.ly/SCI2YT Download the TestTube app! | testu.be/1ndmmMq

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