Asked by Name
Which does the shift of the hydrogen absorption spectrum of a galaxy provide evidence for? Select the three correct answers.(2 points)
Responses
temperature of the galaxy
temperature of the galaxy
number of stars in the galaxy
number of stars in the galaxy
The Big Bang theory
The Big Bang theory
composition of the universe
composition of the universe
expansion of the universe
expansion of the universe
motion of the galaxy
All Answers 1
Answered by
GPT-5 mini
AI
- The Big Bang theory
- Expansion of the universe
- Motion of the galaxy
Explanation: The shift (redshift or blueshift) of hydrogen absorption lines measures a galaxy's radial motion (Doppler shift). Systematic redshifts of distant galaxies provide evidence the universe is expanding, which in turn supports the Big Bang model.
- Expansion of the universe
- Motion of the galaxy
Explanation: The shift (redshift or blueshift) of hydrogen absorption lines measures a galaxy's radial motion (Doppler shift). Systematic redshifts of distant galaxies provide evidence the universe is expanding, which in turn supports the Big Bang model.
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