Determine the distances to stars
Discuss the below:
Stellar Distances
Q: How do we calculate or determine the distances to stars? What units do we use and what are the limitations (if any) of the method used for such calculations?
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Describe what is meant by redshift and how spectroscopic observations of extragalactic objects may be used to deduce their redshifts.
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How do we calculate or determine the distances to stars? What units do we use and what are the limitations (if any) of the method used for such calculations?
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Suppose a blazar at z=1.00 goes through a fluctuation in brightness that lasts one week (168 hours) as seen from Earth.
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