Context: 24 bn km is a long way away, but 0.06% of the distance to Proxima Centauri (not that it’s going there — just for “ooh space is big” comparison).
And yet quote from COSMIC Project Scientist, Cherry Ng: “We will be able to monitor millions of stars with a sensitivity high enough to detect an Arecibo-like transmitter out to a distance of 25 parsecs (81 light-years)”.
Wow.
