The Half-Known

The Map of Ignorance

Every mystery, still unsolved

Every mystery published so far, newest first. Some are closer to an answer than others; none of them are closed.

  1. № 000118 AUGUST 2026SIGNALDELAWARE, OHIO, USA

    The Signal That Outlived Its Sender

    On a summer night in 1977, a radio telescope in Ohio heard something it was built to hear and never heard again. The astronomer reviewing the printout circled the reading and wrote one word in the margin. We have been listening for an encore for almost fifty years.