If it is a galaxy, it would be the oldest known galaxy in the cosmos, but it could also be a brown dwarf or an early black hole.

Astronomer Avi Loeb suggests that a quasi-satellite may be the "relic of an interplanetary mission by humanity from the 1960s ...

While scouring images from the James Webb Space Telescope, astronomers spotted Capotauro, "one of the most puzzling ...

A United Airlines flight diverted to Salt Lake City after an object struck the plane's windshield at 36,000 feet, causing it ...

Two teams are set to explore dramatically different theories about what happened to Amelia Earhart. Each believes it’s closing in on the answer.

Interstellar object 3I/ATLAS is on the opposite side of the sun from Earth - but several spacecraft are in the perfect ...