SETI | Astronomy.com

A large radio antenna dish dominates the left side of the frame, pointing upward against a deep purple night sky dense with stars. A brilliant blue-white star flares brightly in the upper right, surrounded by a soft purple nebular glow. The horizon is dark and flat beneath the antenna.

The real disclosure day: The protocols for announcing extraterrestrial intelligence

Telescopes of the Allen Telescope Array sit beneath a starry night sky. The array is designed to listen for signals sent or generated by extraterrestrial life.

Alien Life, Features

Should we keep looking for ET?

Alien Life, Features

The search for aliens levels up

SETI may have been tuned to the wrong alien frequencies, study says

No signs of technology on exoplanet K2-18 b

The search for alien life may depend on plate tectonics

Today in the History of Astronomy

Sept. 19, 1959: A SETI kickstart

To find alien life, try eavesdropping on their conversations with spacecraft, astronomers suggest

Alien Life, Exotic Objects

The “Wow! Signal,” not surprisingly, was a dud

Alien Life, Exoplanets, Planets, Solar System

What would Earth look like to alien astronomers?

Alien Life, Exoplanets, Planets

Here’s what we know about the signal from Proxima Centauri

Sun-like star identified as the potential source of the Wow! Signal