Evidence for dark matter is exhibited by the
A) relatively similar speeds at which all stars in a galaxy orbit the galactic nucleus.
B) speed at which galaxies orbit one another within clusters.
C) degree to which galaxy clusters exhibit gravitational lensing effects.
D) all of the above
Correct Answer:
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Q2: Cosmology is the study of the overall
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Q10: According to calculations made by modern astronomers,the
Q16: The Big Bang is regarded as the
Q18: The difference between lightwaves approaching and lightwaves
Q40: Relativity is the
A)study of how space,energy,and mass
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Q95: Dark Matter is matter that
A)cannot be seen,
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