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astronomers often use the term redshift to describe how ___

astronomers often use the term redshift to describe how ___ ___ objects really are.
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Astronomers discovered a redshift in light from most galaxies when observed from Earth.What explains the observed redshift of
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Why are redshift and blueshift important to astronomers?(2 points) Responses To be able measure the mass of a Galaxy To know if
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Lookback time for a given redshift, tL(z), is...* time between the given redshift and the beginning of the Universe. * time
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2. asked by qwerty
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Galaxy Formation Quiz3 of 73 of 7 Items Question How do astronomers know about the future collision of Andromeda and the Milky
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Explain the term "borrow". Describe the situation in which it is used. Describe the confusion that may result from its use.
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2. asked by Angela
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Redshift and Blueshift Quick Check1 of 31 of 3 Items Question When will a scientist observe redshift in the spectrum of a
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When astronomers find a redshifted celestial object, they say that the object is moving away from Earth. Can the redshift be
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2. asked by Izzy
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How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point)Responses Astronomers have observed
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2. asked by Ben
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How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point)Responses The two galaxies have
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