4 ms·
I look back to where this started, and this started with Fritz Zwicky noticing that galaxies and galaxy clusters are moving faster than expected. This is the ro
by sahil50 5y ago
I look back to where this started, and this started with Fritz Zwicky noticing that galaxies and galaxy clusters are moving faster than expected. This is the root observation.
From there, a good question is "How do we model it?". And sqrt(GM/R^2 * cH/(2pi)) works really well.
By the way, cH/(2pi) = c^2 / (2pi * 13.8 bly), which looks like centripetal acceleration.
- SiempreViernes 5y agoGalaxy rotation curves are really not the root observation behind structure formation though, those are two very completely different things. I'm also struggling to find what MOND has to say about all the astrophysics observed that LCDM people try to model to get their Tully-Fisher to work. If MOND is true, why would all these astrophysical feedback effects (such as supernovae) not matter for Tully-Fisher?
- sahil50 5y agoThe root observation is that galaxies and galaxy clusters are moving faster than expected, and holding together more strongly than expected.