Shouldn't we also see our galaxy clusters in that ring just beyond the shadow of M87?
99437
Using a naked black hole as a mirror?
54717
Is there a model relating GW signal and luminosity of the merger / burst?
15724
Graviational Lensing Data
76365
Why do galaxies "disappear?"
32598
Are wormholes really a valid shortcut to distant points in the universe?
123545
How Are Galaxies Receding Faster Than Light Visible To Observers?
17066
Light emission from the vicinity of a black hole
73523
Shapes of galaxies
75070
Will the CMB eventually recede outside our observable universe?
153552
Relativistic mass as seen by different observers
53096
Is sun revolving around certain mass in space with reference to some other galaxy?
58042
Redshifting of Light and the expansion of the universe
68684
Age of the CMB: How do we know?
40593
Why the CMB has not been dispersed so far?
136573
Gravitational lensing or cloud refraction?
101884
Orange ring in a black hole image
97088
Why can we see the cosmic microwave background (CMB)?