You observe a faint galaxy and find that a spectral line normally found in the visible part of the spectrum is now seen at infrared wavelengths. From this you conclude that the galaxy: O is moving away from you and has a very low mass. O is moving towards you. O has an unusual chemical composition. O has a very low mass. O is moving away from you.
You observe a faint galaxy and find that a spectral line normally found in the visible part of the spectrum is now seen at infrared wavelengths. From this you conclude that the galaxy: O is moving away from you and has a very low mass. O is moving towards you. O has an unusual chemical composition. O has a very low mass. O is moving away from you.
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Transcribed Image Text:You observe a faint galaxy and find that a spectral line normally found in the visible part of the spectrum is now seen at infrared
wavelengths. From this you conclude that the galaxy:
is moving away from you and has a very low mass.
is moving towards you.
has an unusual chemical composition.
has a very low mass.
is moving away from you.
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