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

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

Scientists have discovered the strongest evidence yet of a rocky planet with an atmosphere outside the solar system, ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

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

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

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

Interstellar comet 3I/ATLAS makes its closest Earth approach on Dec. 19, offering astronomers a rare chance to study a visitor from beyond the solar system ...

"It will be the first planet ever found orbiting a hypervelocity star." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Is it a bird? Is it a ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in ...