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 ...

A discovery in V883 Orionis' planet-forming disk suggests Earth's water could have come from ancient interstellar ice that ...

"The detection of heavy water … proves the water's ancient heritage and provides a missing link between clouds, disks, comets ...

Astronomers are watching a new comet pass through our solar system with great interest. Based on its glow, the 33-billion-ton ...

Eight planets travel in circular paths around a burning ball of gases, called the Sun. Welcome to our Solar System, our space ...

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...

Did NASA find another Earth? Scientists look to the sky to find a copy of our planet, and some experts think they may have ...

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 ...