Astronomers are adopting new strategies in the search for extraterrestrial intelligence. A study in Monthly Notices of the Royal Astronomical Society suggests using Earth’s shadow to detect alien ...

If alien civilizations rise and fall, they may leave behind artifacts long after they are gone. From abandoned megastructures ...

January brought a wide range of thoughtful science conversations featuring researchers from the SETI Institute, spanning everything from hands-on planetary defense with citizen scientists to careful ...

First contact with alien civilizations won’t be with the beings themselves, but with their technology. By searching for these extraterrestrial artifacts, we embark on a journey through our solar ...

In China’s largest province, Qinghai, there’s something a little out of place. A set of modern-looking, metallic pipes protrudes from a mountainside, accompanied by a monument dedicated to the ...