10. Are Redshifts Affecting the Expanding Universe?
In the early parts of the twentieth century, measurements of redshifts and blueshifts were documented beyond the Milky Way galaxy. Two scientists initially interpreted these shifts as random motions, but later was discovered by Hubble that they were not random, and in fact, the exact opposite.
There is in fact a correlation between increasing redshifts and the distances between galaxies and universe expansion. When space is stretched, a cosmic redshift happens, and because space is rapidly growing, these redshifts are very common and can cause the universe to expand quicker than it is.