FPOWorld t1_itwjtt9 wrote
Reply to comment by Due_Connection179 in Earth's atmosphere could be turned into a giant dark-matter detector by trevor25
Here’s a quick vid about the history of dark matter:
It wasn’t gravitational lensing that made scientists think there was matter they couldn’t see, that was something they discovered later that reinforced the idea that dark matter exists. What initially made them realize dark matter existed is that the stars on the outer edges of a galaxy weren’t being flung out of the galaxy as math predicted they should. Some force they couldn’t see was holding galaxies together…hence dark matter. There has been more confirmation of evidence that it it exists via lensing for example, but we still have no idea what is actually doing the work. Dark isn’t describing the color, it’s more of an indication that it’s completely invisible to science. It’s really just a placeholder until someone figures out where this invisible force is being generated from.
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