Question

Hubble's expansion law states _____.

1the distance of a galaxy is proportional to its recessional speed
2 the universe is expanding
3galaxies and stars are making a redshift
4the distance of a galaxy divided by its recessional speed determines its redshift

Answer 1

(A) The distance of a galaxy is proportional to its recessional speed.

Step-by-step explanation:

During the 1920's, Edwin Hubble discovered that galaxies are moving away from each other from earth at speeds that are proportional to their distance. In simpler terms, the farther they are the faster they're moving away from earth.