Astronomers have discovered that Saturn has thrown a newly found comet on its way out of the solar system. Comet A117uUD is expected to go interstellar at 6,700 mph.

The solar system is a big place. To show just how big, Sudbury’s Science North has opened a new outdoor exhibit it calls the Sudbury Solar System Path. It’s a scale model of the solar system ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

Astronomers have witnessed the birth of a solar system beyond our own for the first time. An international team of researchers has been able to pinpoint the exact moment when planets began to form ...

This mismatch “doesn’t mean it’s not there, but it means it’s not Planet 9,” Brown said. “I don’t think this planet would have any of the effects on the solar system that we think we ...

The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the Milky Way," a show at New York City's Hayden Planetarium that ...

Specifically, a massive object, estimated to be between 2 and 50 times the mass of Jupiter, could have passed through the solar system during its early formation stages.

A comparison of 2015 TG387 at 65 AU with the solar system’s known planets. Saturn can be seen at 10 AU. Earth sits at 1 AU, as the measurement is defined as the distance between the sun and our ...