Beyond Humanoids: Extremophiles, Dormant Microbes, and the Universal Challenge of Alien Communication

To the point

Researchers such as André Antunes, Alexandre Rosado, Lisa Kaltenegger, and Arik Kershenbaum argue that alien life is more likely to be simple extremophiles than humanoids, that we should look for faint signs of life and universal patterns in communication rather than Earthlike colors, and that deciphering any alien language will rest on shared logic, as illustrated by Project CETI studying whale sounds.