Key takeawaysStudying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while ...

Using the James Webb Space Telescope (JWST), astronomers have peered into the atmosphere of a cosmic body that could be a ...

M. Keck Observatory in Hawaii. WASP-69b is a Jupiter-size, Saturn-mass gas giant orbiting so close to its star that a full trip around it takes the planet only 3.8 days. In a paper we published in ...

Jupiter’s poles have long been a focus of intrigue for planetary scientists. Recent studies have uncovered massive dark ultraviolet (UV) ovals at the gas giant’s north and south poles.

Jupiter, the solar system's largest planet ... slamming into Ganymede at an angle between 60 and 90 degrees. Now, let's put ...

Io is Jupiter's third-largest moon, spanning roughly 2,300 miles (3,700 kilometers) across, which makes it slightly bigger than Earth's moon. It orbits Jupiter at a distance of around 262,000 ...