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1. Robert McNees (mcnees@mastodon.social)'s status on Sunday, 20-Aug-2023 20:16:43 UTC Robert McNees

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   A diagram in the lower left quadrant indicates the position of Earth relative to 14 pulsars. The period of each pulsar, in units of the inverse hyperfine frequency, is indicated in binary along its line.

   The periods of the pulsars, which are given to very high precision, change in a predictable way. So any civilization that discovered the probe should be able to determine where it came from, even in the far-flung future.