Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Unlike inner planets that do not take too long with their transits at all, outer planets have long periods where they take ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

Some people think that when the outer planets—Jupiter ... Around that time, the internet started connecting people all over ...

Why it's so special: This iconic montage features images of Jupiter, Saturn, Uranus and Neptune captured between 2014 and 2024 as part of the Hubble Space Telescope's Outer Planet Atmospheres ...