Though long theorized to exist, the first exoplanet was detected in 1991. Since then, their known diversity has increased exponentially.

New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.

Astronomers using NASA’s James Webb Space Telescope have examined the atmosphere of a rare giant planet with temperatures ...

NASA’s James Webb Space Telescope has uncovered a rare alien world that sits in a cosmic “sweet spot” between scorching hot Jupiters and frozen gas giants like Saturn.

TOI-199 b, a rare temperate giant planet, sits between scorching hot Jupiters and frozen gas giants, and JWST has found ...

A giant planet nearly 700 light-years away has a bizarre daily weather cycle where mineral clouds appear every morning and ...

Somewhere between the scorching extremes of hot Jupiters and the frozen depths of gas giants like Saturn lies a planet that astronomers have spent years looking for and struggling to study: a ...

Mercury’s polar ice deposits may have formed in just one Mercurian day after a giant comet or asteroid slammed into the ...

Astronomers using NASA’s James Webb Space Telescope have uncovered a rare world unlike anything in our solar system — a giant planet about the size of Saturn with surprisingly Earth-like temperatures ...

(Nanowerk News) Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don’t have hard surfaces. Jupiter and Saturn are the gas giants in ...

For decades, astronomers have struggled to differentiate giant planets from brown dwarfs, a class of objects more massive than planets but too small to ignite nuclear fusion like true stars. Through a ...

One way gas giants form is through core accretion, where solid cores gradually grow in a disk by pulling in rocky and icy pebbles until they become massive enough to attract the gas that surrounds ...