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Have we actually proved scientifically there's a force or physical matter acting on something and it's not just being obscured from our vantage point? -- In th
by joe_the_user 7y ago
Have we actually proved scientifically there's a force or physical matter acting on something and it's not just being obscured from our vantage point?
-- In the case of dark matter, the answer is yes. Dark matter has been indirectly observed from the gravitational lensing of the dark matter shrouds surrounding galaxies - notably in situations where the shrouds of two colliding galaxies separate from the galaxies themselves. It's a "picture" as exact as many things astronomers have observed.
- alfiedotwtf 7y ago> in situations where the shrouds of two colliding galaxies separate from the galaxies themselves TIL... That’s the first time I’ve read that. Sounds interesting, have you got any links?
- gepoch 7y agoSounds like he's talking about the bullet cluster... https://en.wikipedia.org/wiki/Bullet_Cluster https://en.wikipedia.org/wiki/Bullet_Cluster Although that's a colliding pair of galaxy clusters. I'm not currently aware of any examples of this effect being observed for just two galaxies.
- alfiedotwtf 7y agoAwesome, thanks for the link!