Physics, 24.03.2020 19:59 lexi8938

Near the center of our galaxy, hydrogen gas is moving directly away from us in its orbit about a black hole. The electromagnetic radiation we receive from this hydrogen gas has a Doppler-shifted wavelength of 1915 nm when it reaches earth. From experiments done on earth, we know the source wavelength is 1875 nm. What is the speed of the gas relative to earth

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Near the center of our galaxy, hydrogen gas is moving directly away from us in its orbit about a bla...