Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

Anyone can name a star online, but the International Astronomical Union is offering a rare space opportunity: to name a planet observed by the groundbreaking James Webb Telescope. The IAU is ...

Star Gazers is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and ...

(NEXSTAR) – The James Webb Space Telescope has the out-of-this-world honor of observing exoplanetary systems – those outside our solar system – but only we humans get the chance to name the systems.

This story was updated at 2:40 EST. Astronomers on Tuesday (Dec. 20) announced the discovery of the first two Earth-size alien planets — a historic find for sure, but the newfound worlds didn't ...

Artist's impression of the newly named exoplanet Isagel (right) that orbits the star Aniara (HD 102956) in the Big Dipper 399 light years from Earth. The planet is about as massive as Jupiter and ...

If you step back in time, thousands of years ago, people knew about the brightest planets pretty much everywhere. These are Mercury, Venus, Mars, Jupiter and Saturn. And pretty much every culture knew ...