What lies beyond Pluto and the Kuiper Belt? Today we explore the Oort Cloud a vast, invisible shell of trillions of icy bodies that may stretch nearly two light-years from the Sun. Though never ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to find out ...

Highlights from a cometary trio that captured our imaginations. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. 2025 has seen stargazers look on ...