Neptune’s supersonic winds and icy storms revealed a planet so extreme that it forever changed our picture of the solar ...

A passing star, or a stellar flyby, with the potential to pull Neptune out of its orbit by just 0.1%, could mean catastrophe for the entire solar system. But don’t worry — it won’t happen in our ...

New models suggest Uranus and Neptune may hold far more rock than expected, raising questions about how these distant planets formed.

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers have detected a new sub-Neptune exoplanet orbiting a bright G-type star. The newfound alien world, ...

Despite being part of our own solar system, Neptune has long been a cosmic mystery. It's the most distant planet from the Sun and also one of the least explored. Only one spacecraft—Voyager 2—has ever ...