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Kind: captions Language: en the first clue came from a Swiss astronomer named Fritz Zwicky just a few years after the discoveries that had suggested the Big Bang is when he noticed that these newly discovered galaxies were behaving oddly Fritz Zwicky looked at clusters of galaxies and found that the individual galaxies within those clusters are moving so fast that the clusters should fly apart moving around so rapidly that it was impossible to understand why they didn't just wander away something clearly held them in these movements telescope to explain it so he called the phenomenon don't la materia translated as dark matter and then the idea probably faded away wiki's observation might have ended up forgotten and for nearly 40 years it was until an astronomer named Vera Rubin entered the field Vera Rubin was one of these astronomers who was not appreciated until much later she was a woman in astronomy at a time when the field was not particularly friendly to women the stars at the edge of the galaxies were moving so fast and they should have been flung off into space [Music] think about a spinning wheel covered in water if the wheel is moving slowly Wanek links to the wheel what spin it fast enough the water flies off same thing should happen out in the universe stars swirling around in a galaxy if they orbit too fast they'll get flung off out into space [Music] except that's not what Vera Rubin sees the galaxies are spinning fast but the stars stay in their orbits what's holding the man it has to be gravity to respond gravitational fall from something not right and we don't know what that is [Music]
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