A single viral clip has convinced thousands that Earth has just received its first message from the depths of interstellar ...

Just as mysterious interstellar object 3I/ATLAS reemerged from behind the Sun last week, astronomers detected intriguing radio signals from it that give new clues about its chemical composition.

ATLAS Alert: 3I/ATLAS Comet Perihelion Looms—NASA Defense vs Alien Claims As the mysterious interstellar comet 3I/ATLAS speeds towards its perihelion on 29 October 2025, NASA's Asteroid ...

A mysterious space signal that has never been explained may have come from an equally mysterious object racing through our solar system. Harvard astrophysicist Avi Loeb, who has continued to theorize ...

Scientists like Avi Loeb spotlight anomalies hinting at alien tech as it hurtles past Mars on 3 October. NASA & ESA track this potential spaceship—could it change everything? A signal unlike any other ...

Jack Knudson is an assistant editor for Discover Magazine who writes articles on space, ancient humans, animals, and sustainability, and manages the Planet Earth column of the print issue. View Full ...

Astronomers have picked up a radio signal from a mysterious interstellar visitor speeding through our Solar System. Using South Africa's MeerKAT radio telescope, researchers detected hydroxyl radicals ...