The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, yet a growing group of researchers warns that such a moment might arrive not ...

This year, the US Congress has heard testimonies from "UFO witnesses", providing more evidence than ever that alien intelligence may have attempted contact with Earth. But what are the pivotal moments ...

Scientists have sought out and detected radio emissions from from interstellar comet 3I/ATLAS, all but confirming that it has natural origins.