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Why do we have both positive and negative electric charges, but not both positive and negative masses? Could there be negative masses out there which anti-gravitate? How much such anti-gravitating matter behave? Why don't physicists look for it? Could anti-matter anti-gravitate? So many questions! At the end of today's video you will know all that physicists know about this.

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0:00 Intro
0:31 Newton's law vs Coulomb's law
3:53 Does anti-matter anti-gravitate?
6:55 How would anti-gravitating matter behave?
8:27 Does anti-gravity explain dark matter or dark energy?
11:42 Sponsor message

#physics #universe