How Do Astronomers Measure Distance

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=_Lsj-Hz-NS4

Since astronomers can't actually travel to a star, they rely on two ingenious methods to measure a star's distance from earth. Watch BrainStuff break down the science of space measurement in this episode. • Whether the topic is popcorn or particle physics, you can count on the HowStuffWorks team to explore - and explain - the everyday science in the world around us on BrainStuff. • Watch More BrainStuff on TestTube http://testtube.com/brainstuff • Subscribe Now! http://www.youtube.com/subscription_c... • Watch More / brainstuffshow • Twitter / brainstuffhsw • Facebook / brainstuff • Google+ http://gplus.to/BrainStuff

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