Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Mount Everest may be the tallest mountain on Earth, but it's nothing compared to the towering giants scattered across our ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Welcome to SolarBalls! This channel features entertaining animations that help you learn about the solar system and the universe. Enjoy fun space animations and comedy. #solarballs #planetball #planet ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

Simulations Of Early Solar Systems Find Up To 40 Percent Chance That Planet Nine Exists Wide-orbit planets are fairly common according to the study, and there's a good chance we have one of our own.

The best telescopes for seeing planets will let you capture Saturn and Neptune in the same view. Watch out for Prime Day, which is your chance to save big on deep space observation.