Astronomers can't directly observe dark matter, but they know it's there. In fact, the mysterious stuff is far more abundant than the "normal" matter we can see and touch.
'We Don't Planet' Episode 4: What's the Evidence for Dark Matter? | Video
SPACE.com - 19 May 2017 16:30
Astronomers can't directly observe dark matter, but they know it's there. In fact, the mysterious stuff is far more abundant than the "normal" matter we can see and touch.
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