>>Doesn't it take a million and some years for the galaxy to rotate?
>>
>>Haven't we known what galaxies are for 80 years?
>>
>>I have my doubts that there is actual science going on in cosmology.
>
>More like over a few hundred million years. The rotation of galaxies can be observed through the Doppler effect - it doesn't require observing the galaxy for an entire period.

Do tell.

Or perhaps a could cite?

You have to admit, the room for horrific error here has to be pretty tremendous.