science

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.

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  1. The galaxy is moving away from the viewer.

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  2. yo thanks that was really fast!!

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  3. That is known as the Doppler effect.

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    DrBob222
  4. woah really! i have heard of the name Doppler effect but i never knew it was that

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  5. 1) A
    2) B
    3) C
    4) C
    5) C, D

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