There is a silence in the night sky that has bothered me for as long as I can remember. ” That line, attributed to Richard ...

The Search for Extraterrestrial Intelligence (SETI) is a dream of humanity, but advanced extraterrestrial civilizations do not necessarily communicate in the same way as humans. A paper published on ...

Just over 40 years ago, in his novel Contact, astronomer Carl Sagan imagined what it would be like to detect radio signals ...

It's a big universe out there and if we have any neighbors, it might be better if they left us alone, and one pair of ...

Physicist Richard Feynman argued that fundamental limits of physics, biology, and time make interstellar contact between civilizations effectively impossible. He cited vast distances, the speed of ...

Earthlings, brace yourselves: the galaxy may be emptier than your last Tinder date. According to a new study, any alien civilizations out there? Probably short-lived — and doomed to fail spectacularly ...

After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA's WISE orbiting observatory has found no evidence of advanced ...

When you're looking for signs of extraterrestrial intelligence, it helps to know what you're looking for and to go about it ...

When people imagine first contact with aliens, they often picture giant ships in the sky or wise beings sending peaceful messages. A new scientific idea suggests something very different. According to ...

Interstellar objects such as Comet 3I/ATLAS can be sent by alien civilizations to "sow" life on Earth. At the same time, it is almost impossible that for the entire time of Earth's existence the Earth ...