Cosmology test

What does cosmology ask?
According to NASA, the definition of cosmology is "the scientific study of the large scale properties of the universe as a whole." Cosmologists puzzle over exotic concepts like string theory, dark matter and dark energy and whether there is one universe or many (sometimes called the multiverse)..

QUIZ ON COSMOLOGY. 1. When astronomers look at distant galaxies, what sort of motion do they see? A) The Galaxies are all spinning rapidly.

Cosmological test

The Tolman surface brightness test is one out of six cosmological tests that were conceived in the 1930s to check the viability of and compare new cosmological models.
Tolman's test compares the surface brightness of galaxies as a function of their redshift.
Such a comparison was first proposed in 1930 by Richard C.
Tolman as a test of whether the universe is expanding or static.
It is a unique test of cosmology, as it is independent of dark energy, dark matter and Hubble constant parameters, testing purely for whether Cosmological Redshift is caused by an expanding universe or not.

Cosmology test

What does cosmology ask?