Question

Is there any evidence against the Cosmological Principle?

Answer 1

• Distribution of radio galaxies

• Observed with the Very Large

Array (VLA) in New Mexico

• There are 40,000 bright radio

galaxies in the upper panel

– Distribution is isotropic

• There are about the same

number of fainter radio galaxies

in the bottom panel, which is a

zoom-up of the small region in

the upper panel

Answer 2

Distribution of radio galaxies

Large array are seen in New mexico