Dear collegs,
I am nuclear astrophysicist and I have never accepted the theory of dark matter or even dark Energy...
The Gravitation redshift is for Qasars the highest... and therefor is the light from there much stronger shifted in the red spektrum, because the time shifting was 14 billion years ago other in the Activ Galaxy Nucleis (denser) that results the shifting of wavelenth.
I have Worte my astrophysical thesis with Max-Plank-Institute for radioastronomy in Germany/Bonn about central engine of AGNs
I am very happy greatful for the correcting of this mistake in the astastrophysiks. Thank you.
Best regards
Robert S. Karapetians