txt.sour.is xkcd-com@feeds.twtxt.net "Cosmic Distance Calibration This is the biggest breakthrough since astronomers noticed that the little crosshairs around red giant stars startin ..."

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Fri, Mar 21 00:00 2025 (1y ago)

Cosmic Distance Calibration
This is the biggest breakthrough since astronomers noticed that the little crosshairs around red giant stars starting to burn helium are all the same size. ⌘ Read more

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