When an astronomer sees certain stars and galaxies that look much redder than expected, what conclusion might the astronomer draw about the motion of that galaxy?

The galaxy is moving away from Earth.

Explanation:

Plato

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

i'm on my way to history not a mistory.