The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

James Webb finds a hot planet that is tidally locked with its parent star, is coated with a thick atmosphere of volatile ...

Rocky planets like our Earth may be far more common than previously thought, according to new research published in the ...

Astronomers are uncovering distant worlds beyond our solar system using ingenious indirect methods like observing stellar ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

Learn how the discovery of a young planet orbiting two suns is revealing how worlds form and survive in binary star systems.

Astronomers using the James Webb Space Telescope have captured dramatic helium streams pouring off the super-puff exoplanet ...