THE DARK SIDE - Black Holes And Invisible Matter | SPACETIME - SCIENCE SHOW

We are surrounded by dark matter and dark energy. Mysterious forces that permeate the universe play a fundamental role in determining its evolution. Scientists can observe the effects of these cosmic enigmas. As of yet, they have found nothing. Space, an infinite vastness - with nothing in it. In a volume of about 13,000 by 13,000 by 13,000 kilometers, which is roughly the volume of the earth, there's the mass equivalent of a small grain of sand.

Courtesy of WELT Documentary on YouTube. Watch on YouTube ↗

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