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3C 273

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Observing 3C 273 is a lot like observing Pluto. In both cases, you’ll only see a faint point of light, but the observations are meaningful because of what the objects are. In the case of 3C 273, you’re looking at the first quasar ever discovered, receiving photons emitted a couple of billion years ago fromContinue reading "3C 273"

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