willkat willkat

11-08-2021
Biology

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4. What is harder for the astronomer to measure: A galaxy's redshift (indicating recessional velocity) or its distance from Earth? Why? Explain your answer.

Respuesta :

mistressofdark mistressofdark

11-08-2021

Answer:

Its distance from the Earth

Explanation:

Its distance from the Earth is more difficult to measure because to measure it we need the redshift anyways, or we can get a rough estimate by its brightness. To measure the redshift we just need its wavelength and some calculations.

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sopara2020 sopara2020

11-08-2021

Answer:

its distance from earth is harder

Answer Link

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