Astronomers say that mysterious interstellar visitors like 'Oumuamua and 3I/ATLAS are the most common large bodies in the ...

The Vera Rubin Observatory captured this view of 31/Atlas before it was identified. C.O. Chandler et al. Nearly a month ago, a mysterious object was seen hurtling through the solar system and later ...

Astronomers have been racing to get a better look at 3I/ATLAS, a mysterious object with interstellar origins that has defied ...

NASA's Voyager 1 launched 48 years ago in September 1977 on a decades-spanning journey to study the cosmos and search for ...

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system. It's possible the trans-Neptunian object, dubbed 2017 OF201, is large enough to ...

As evidence continues to mount that the mysterious object with interstellar origins currently speeding toward the inner solar system at a breakneck speed is a comet, not everybody's convinced quite ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...