Researchers used 6000 hours of computer time searching for the hum of gravitational waves emitted by neutron stars. Not knowing where to look they took a best-guess approach and focussed on a particular space in space. “Just like guessing that your missing keys will probably be close to your handbag or wallet,” ANU explains on their behalf.

They did not find a wave – perhaps they should wait until Apple releases a long range AirTag.