Astronomers scanned the interstellar object 3I/ATLAS for alien signals using the Green Bank Telescope, but found none. The ...

A stunning meteor was spotting zooming across the sky in the US, just hours before locals rung in the New Year, with an ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The Perseverance rover has been exploring Jezero Crater for years, but it's never found an otherworldly object quite like this one until now.