Where do some theorists look for indirect evidence supporting a prior contracting universe?

Answer

Imprints on the Cosmic Microwave Background (CMB)

Theorists explore whether geometry or residual gravitational waves from the prior collapse could have imprinted themselves on the CMB.

Where do some theorists look for indirect evidence supporting a prior contracting universe?

#Videos

What Was There Before The Universe? - YouTube

Brian Cox - What Was There Before The Big Bang? - YouTube

Originexistenceuniversetimecosmology