Asked by an axolotl <3

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.
Answered by PsyDAG
The galaxy is moving away from the viewer.
Answered by an axolotl <3
yo thanks that was really fast!!
Answered by DrBob222
That is known as the Doppler effect.
Answered by an axolotl <3
woah really! i have heard of the name Doppler effect but i never knew it was that
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