3I/ATLAS is the third interstellar visitor ever to visit the solar system having been formed around a distant star. Tune in ...

Add Yahoo as a preferred source to see more of our stories on Google. Today is the day that astronomers, amateur stargazers and alien conspiracy theorists alike have been waiting for: interstellar ...

Scientists confirmed that the interstellar comet 3I/ATLAS, which passed closest to Earth in December 2025, showed no ...

2025 marked the first official year of our newest citizen science effort, Satellite Surveillance, which delivered major ...

Everyone's favorite interstellar comet, 3I/ATLAS, flew past Earth overnight, coming within about 168 million miles (270 million kilometers) of our planet. When you purchase through links on our site, ...

What was your skywatching highlight of 2025? A comet becoming visible to the naked eye? Mars disappearing behind the moon? Or did you glimpse a "blood moon" total lunar eclipse and see the northern ...

Comets continued to grab the limelight in the new year as well, with C/2025 R3 scheduled to fly by Earth in the coming months. It follows a string of other comets that made headlines in the past two ...

Interstellar comet 3I/ATLAS made its closest approach to Earth on Friday, Dec. 19. The comet will pass within about 170 million miles of our planet and poses no danger. While not visible to the naked ...