The first unmistakable signal from another intelligence may not be a cheerful greeting. A growing group of researchers is ...

The investigation of pulsar signals suggests that aliens may be communicating their presence by flashing signals in the ...

For decades, storytellers have been imagining what it might be like when humanity first makes contact with an alien intelligence. In 1998, author Ted Chiang delivered the novella “Story of Your Life,” ...

The SETI Institute continues to push the boundaries of space exploration and our understanding of the universe. From deciphering alien messages to searching for extraterrestrial intelligence and ...

A simulated “alien” signal sent by a Nasa orbiter circling Mars has finally been cracked after months by a father-daughter duo, revealing the cosmic coded message. Nasa collaborated with SETI ...

If you were an alien from TRAPPIST-1, a star some 40 light-years away from Earth, searching for signs of intelligent life, you might spot an odd burst of infrared light coming from our solar system.

On a hot November day in the tropical forest of Arecibo, Puerto Rico, amongst the croaking of coquís, the message went out. Warbling audio crackled over loudspeakers—the audible result of the work of ...

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Over a year ago, we received a signal from Mars—an encoded message from Europe’s Martian orbiter, picked up by three observatories on Earth. The contents of this simulated alien message, crafted by an ...