Beacon in the Galaxy: A NASA/JPL-Led Interstellar Message Proposal to Introduce Mathematics, Chemistry, and Biology

To the point

Jonathan Jiang and colleagues propose Beacon in the Galaxy, a revived interstellar message that would start with numbers and math, then chemistry and DNA, explain Earth and the solar system, provide a return address and coordinates anchored to globular clusters near the galactic center, and invite a reply using a robust bitmap code from large telescopes like the Allen Telescope Array or FAST, though Active SETI debates remain.

Researchers Made a New Message for Extraterrestrials
scientificamerican.com

Researchers Made a New Message for Extraterrestrials

An updated communication could be beamed out for space alien listeners in hopes of making first contact