Add Yahoo as a preferred source to see more of our stories on Google. This image of interstellar comet 3I/ATLAS was captured by the Hubble Space Telescope's Wide Field Camera, July 21, 2025. (photo ...

Scientists are hard at work considering what kinds of engineering alien probes would need to reach us through interstellar space. However, crossing deep space to reach Earth with a probe would require ...

A veteran NASA astronaut has revealed how he knows there is intelligent life in outer space, and issued a dark warning about ...

Scientists searching for advanced alien civilizations have detected a mysterious signal in data from the world's largest single-dish radio telescope.

The Very Large Array is a collection of 27 radio antennas located near Socorro, New Mexico. Each antenna in the array measures 82 feet (25 m) in diameter and weighs about 507,000 pounds (230 metric ...

When/if alien life ever cruises toward Earth in big spaceships, we’re probably not just going to see it; we’re going to hear it via narrow radio signals. If an extraterrestrial civilization wanted to ...