Question

What does it mean if a galaxy gives off light which has been shifted toward the red end of the electromagnetic spectrum?

A. The galaxy is very hot and has not cooled down yet

B. The remnants of an explosion are between the galaxy and Earth

C. The galaxy is moving away from Earth

D. The galaxy is much older than Earth

Answer 1

i did the wrong subject ;-;

Answer 2

mk

Answer 3

you still haven't got ananswer

Answer 4

yup ;-;