The rings of Saturn are among the wonders of our solar system, with a diameter of roughly 175,000 miles (280,000 kilometers) as they encircle the giant planet. But smaller celestial bodies in the ...

Just a few weeks ago, we crossed the significant milestone of 6,000 known exoplanets. The counter keeps getting higher, and there are 8,000 more candidates waiting for confirmation. In the decades ...

The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

A newly discovered dwarf planet could hold the key to unlocking the mysteries of our solar system’s outer reaches — but what ...

This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

(CNN) — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have ...