The correct response is:
The galaxy is moving away from the viewer.
A redshift in the emission line indicates that the light from the galaxy is being stretched, which occurs as the galaxy moves away from us.
What does it mean when an emission line of helium from a galaxy is shifted toward red?(1 point)
Responses
The galaxy is moving away from the viewer.
The galaxy is moving away from the viewer.
The galaxy contains a large percent of hydrogen.
The galaxy contains a large percent of hydrogen.
The galaxy contains a small percent of hydrogen.
The galaxy contains a small percent of hydrogen.
The galaxy is moving toward the viewer.
1 answer