yarn 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 ..."

feeds.twtxt.net

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

⤋ Read More