Physics, 05.05.2020 14:15 KindaSmartPersonn
The Sombrero Galaxy is located roughly 30 million light-years from the Milky Way and is moving away from the Milky Way at a speed of 1000 km/s. If we observe absorption by sodium at a wavelength of 589.0 nm in a laboratory on Earth, at what wavelength do we observe the same sodium absorption in the spectrum of the Sombrero Galaxy?
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The Sombrero Galaxy is located roughly 30 million light-years from the Milky Way and is moving away...
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