Question

What does it mean when an emission line of helium from a galaxy is shifted toward red?(1 point)
The galaxy contains a small percent of hydrogen.

The galaxy contains a large percent of hydrogen.>>>

The galaxy is moving away from the viewer.

The galaxy is moving toward the viewer.

Answers

The galaxy is moving away from the viewer.
yo thanks that was really fast!!
That is known as the Doppler effect.
woah really! i have heard of the name Doppler effect but i never knew it was that
1) A
2) B
3) C
4) C
5) C, D

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