Imagine a Slushee composed of ammonia and water encased in a hard shell of water ice. Now picture these ice-encrusted ...

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

The most elusive planetary aurora in the Solar System has finally been revealed in all its gently glowing glory.

When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an ...

Observations of Jupiter show that ammonia is unevenly distributed in the upper atmosphere, against expectations of uniform mixing. Scientists found evidence for a complicated but apparently real ...

Uranus is an ice giant planet with a thick atmosphere over a hot mantle of water, ammonia, and methane ices. Humanity has ...

Fresh data from the James Webb Space Telescope provide more evidence for what some consider a biosignature — but debate is ...

This significant achievement sheds light on the elusive auroras of the ice giant, which have long ... appeared as cyan splotches across Neptune's surface. Interestingly, Neptune's auroras differ ...

NASA's Juno revealed mushballs on Jupiter, reshaping our understanding of deep, violent gas giant storm systems.

Webb has two decades ahead of it, but it's already captured some stunning images. Here are 35 of our favorites.

The weather forecast for Jupiter calls for clouds with a chance of lightning and "mushballs"—a slushy mix of ammonia and ...