Originally posted by @humySkip Black Holes.
One of the first things many cosmologists did when dark matter theory was proposed is to estimate the amount of mass of black holes to see if that could account for the apparent rotation of galaxies; it didn't even come close. If there were that many black holes, we should be seeing vastly more gravitational lensing cases (from black holes) than we do observe.
What about Wimps?
Originally posted by @metal-brainThat's not consistent with our observations.
No. I said dark matter was likely to be mostly black holes.
Originally posted by @kazetnagorraI don't observe many bats at night, but I'm sure they are there and very numerous.
That's not consistent with our observations.
Find a better way to observe and you might find the black holes you cannot now.
Originally posted by @metal-brainDo you think we might be able to find faeries if we use better ways to observe?
I don't observe many bats at night, but I'm sure they are there and very numerous.
Find a better way to observe and you might find the black holes you cannot now.
Originally posted by @kazetnagorraWe know black holes and bats exist.
Do you think we might be able to find faeries if we use better ways to observe?
Originally posted by @metal-brainBut not in the same place and time🙂
We know black holes and bats exist.