Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

Astronomers finally spotted evidence of auroras on Neptune after years of searching, raising new questions about the planet.

The decision comes as the Voyager spacecraft face diminishing power supplies due to the gradual decay of their radioactive ...

Explore This SectionPerseverance HomeMission OverviewRover ComponentsMars Rock SamplesWhere is Perseverance?Ingenuity Mars HelicopterMission ...

After nearly 36 years of searching, astronomers have finally confirmed Neptune has auroras, thanks to data from the James ...

The ice giant officially joins the lineup of planets with auroras, completing the set of all eight planets in the Solar ...

Long-Sought Auroral Glow Finally Emerges Under Webb’s Powerful Gaze Neptune lies in the cold, dark reaches of the outer edges of our solar system, about 3 billion miles from the Sun, at the farthest ...

Saturn has surpassed Jupiter, which has 95 known moons, with the new sightings. Uranus (28), and Neptune (16) are still ...

Plus: A solar eclipse and an occultation of the Pleiades as our satellite skims through several constellations in the sky ...

The solar system is home to bizarre moons like Enceladus and Callisto, each unveiling nature’s wonders and some of science’s ...

The two exoplanets, or planets outside of our solar system, orbit a star called TOI-1453, which is slightly cooler and ...

The smallest disk identified, meanwhile, stretched to just 0.6 AU – closer to the star than the Earth is to the Sun.