RE: How Do Scientists Know It's Space Expanding Not Galaxies Moving?
August 10, 2017 at 9:14 am
(This post was last modified: August 10, 2017 at 9:27 am by Alex K.)
When space expands, redshift is the sum of all expansion during the light travel. When Galaxies move, the redshift from the Doppler effect is the difference between movement speeds at the time of sending and receiving. Big difference.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
