xkcd feeds.twtxt.net Tue, Feb 20 22:00 (39w ago) Light Leap Years When Pope Gregory XIII briefly shortened the light-year in 1582, it led to navigational chaos and the loss of several Papal starships. DownloadWhen Pope Gregory XIII briefly shortened the light-year in 1582, it led to navigational chaos and the loss of several Papal starships. ⌘ Read more ⤋ Read More Yarn