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The Dark Matter & Dark Energy [5/5]
Dark matter are invisible objects that react with matter by gravitational force. Scientists believe that the dark matter is made up of exotic particles like ...
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The Dark Matter & Dark Energy [5/5]
Dark matter are invisible objects that react with matter by gravitational force. Scientists believe that the dark matter is made up of exotic particles like ...
Date: 5 hrs ago
Video by:  YouTube
 
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