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2026
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What did the 15.8% redshift in 3C 273's spectrum reveal about its distance from Earth?
Astronomical Instruments and Observatories
Big Bang Theory
Galaxies and Large-Scale Structure
Sources that address it
First identification of a quasar: 3C 273
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Related questions
How did Edwin Hubble use Leavitt's relation to prove the Andromeda nebula lay outside the Milky Way?
How did Maarten Schmidt realize the strange emission lines in 3C 273's spectrum were actually redshifted hydrogen?
How far did Hubble calculate Andromeda to be, and why did that distance settle the debate?
What did Hubble's 1924 distance measurement to Andromeda's Cepheids ultimately prove about the Milky Way?
What did the redshift of 3C 273 imply about its distance and energy output?
What role did the 100-inch Hooker telescope play in making Hubble's measurements possible?
Why did 3C 273's brightness at such a vast distance imply a supermassive black hole?
Why did radio astronomers initially call objects like 3C 273 'quasi-stellar radio sources'?