https://www.theregister.co.uk/2018/11/06/laser_seeking_aliens/

Space agencies and private citizens spend millions of dollars and countless hours hunting for signs of extraterrestrial life. Yet, there may be an easier way to find intelligent civilizations, according to a pair of researchers from MIT in the US.

Instead of sending spacecraft out into space or listening for a signal on massive radio arrays, the aliens should come to us. And what could possibly be the best way to help them find Earth? Shine a giant laser, er, of course.