LCDM also apparently fails to explain the velocity of the bullet cluster, so it's not like it's slam dunk for DM (collision velocity better matches MOND).
Some MOND proponents posit "sterile neutrinos" to complete the theory in some cases, like the bullet cluster. And then there are bullet cluster-like failures for LCDM that get papered over:
There have also been recent measures that suggest that much existing data is actually more consistent with warm regular matter that has so far gone undetected rather than cold dark matter.
The dark matter "consensus" is a flimsy facade covering a lot of gaping holes. Something's gotta give.
With JWST it seems we might be able to get closer to an answer[1]. Sterile neutrinos[2] seemed like an obvious candidate, but we'll see how that pans out. Current searches aren't positive[3][4], but I suppose it's far to early to call it quits on that given the theoretical motivation.
http://astroweb.case.edu/ssm/mond/moti_bullet.html
LCDM also apparently fails to explain the velocity of the bullet cluster, so it's not like it's slam dunk for DM (collision velocity better matches MOND).
Some MOND proponents posit "sterile neutrinos" to complete the theory in some cases, like the bullet cluster. And then there are bullet cluster-like failures for LCDM that get papered over:
https://tritonstation.com/2016/12/23/crater-2-the-bullet-clu...
There have also been recent measures that suggest that much existing data is actually more consistent with warm regular matter that has so far gone undetected rather than cold dark matter.
The dark matter "consensus" is a flimsy facade covering a lot of gaping holes. Something's gotta give.