Video Details

Today on Crash Course Astronomy, Phil
s into some very dark matters. The stuff
an actually observe in the universe isn’t
there is. Galaxies and other large
ctures in the universe are created and
ted by a force we detect mostly
rectly, by observing its impact: DARK
ER. ... More


Added Dec 3, 2015  

Channel Education

Duration 12:00   |   views 608998


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