Which of the following is TRUE?

A) The center of the universe is located at a point about 200 Mpc from us in the center of a cluster of galaxies.
B) At the time that the Big Bang expansion began, all matter and energy in our observable universe was compressed into a single point of space.
C) It is possible for galaxies that are very distant to actually move through space at a speed several times the speed of light.
D) A redshift occurs when a photon loses energy and slows down as it moves through space.
E) We measure a redshift for roughly half of the galaxies that we observe, and for the others we measure a blueshift.


Ans: B) At the time that the Big Bang expansion began, all matter and energy in our observable universe was compressed into a single point of space.

Physics & Space Science

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