“A New Dark Force?” – The Daily Galaxy –Great Discoveries Channel

Everything we know about the universe and all the laws of physics, apply to four percent of the universe. The other 96 percent are the unknown phenomena of dark matter and dark energy. If we account for all the matter and energy that we’re familiar with, says Neil deGrasse Tyson, and measure up how much gravity it should have, it’s one-sixth of the gravity that’s actually operating on the universe. We call that dark matter. It really should be called dark gravity. and we don’t know what that is….

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