Author Question: The modern theory of dark energy arises from observations showing that A) galaxies spin at slower ... (Read 5 times)

RODY.ELKHALIL · **on:** Jul 29, 2018

The modern theory of dark energy arises from observations showing that

A) galaxies spin at slower than expected rates.
B) superclusters are collapsing.
C) the speed of light is not exactly constant.
D) galaxies are accelerating away from each other.

Question 2

The theory of dark energy tells us that

A) empty space is seething with a form of energy.
B) there is a force that behaves like an anti-gravity.
C) there is still much to learn about this universe.
D) All of the above.