A large lunar crater featured in the iconic 'Earthrise' photo has just helped the European JUICE spacecraft hone its ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Is there a massive undiscovered planet on the outer reaches of the Solar System? The idea has been around since before the ...

Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" ...

From Mercury to Pluto (and maybe even Planet Nine), here are some of 2023's most intriguing discoveries about the planets, moons and other bodies in our solar system.

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

Nasa's powerful James Webb Space Telescope is showing us something humankind has never witnessed firsthand before: The birth ...

A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be ...

Learn about cryovolcanism, which shapes the surface of icy moons in the outer Solar System by releasing water that ...

Whereas Pluto takes only 248 years to make its way around the Sun, 2017 OF201 takes a whopping 25,000 years to complete one orbit, in a path that ranges from a perihelion of 44.5 AU to an aphelion ...