Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

If you travel far enough away from the Sun, the Solar System becomes a lot more populated. Out past the orbit of Neptune lies the Kuiper Belt, a vast, ring-shaped field of icy rocks. This is where ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Traveling from one star to another is currently impossible to achieve within a human lifetime. But some projects are designing ways to propel payloads to the nearest star system (Alpha Centauri) using ...

“Every single time,” Brown says, “there’s this little charge of, ‘Oh my God, this little ice ball at the edge of the solar system has never before been seen by human eyes until this very ...

Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth.

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

The next Sputnik Moment will take place against the backdrop of great power competition, as it did in the 1950s. This time, the top contenders are the U.S. and China. There are many obstacles to ...

The organic ingredients to life, hints to where Earth’s water came from, and the fundamental building blocks of our planet ...

The scenario also could support Pluto's active geology and possible subsurface ocean, despite its location at the frozen edge of the solar system. A NASA postdoctoral researcher at Southwest ...