Since infrared light is not visible, colors were artificially assigned to the photo using the following scheme:
Photographed
Color
Wavelength
blue
1.05 um
green
1.25 pm
red
1.60 um
If all the galaxies shown were composed of the same kinds of stars and nebulae, then the reddest galaxies would
A.be youngest.
B.
be moving away fastest.
C.
contain the most hydrogen.
D
be moving toward us the fastest.
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Ответ:
(a brainliest would be appreciated)