Everyone's favorite dwarf planet, Pluto, was discovered just 95 years ago. Here's the story of how the once-ninth planet was ...

Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. Eris is the most ...

Haumea is a dwarf planet in the Kuiper Belt, a region of icy worlds beyond Neptune's orbit. It's one of the fastest-spinning objects in our solar system. Quaoar is a dwarf planet in the Kuiper belt, a ...

Asteroid belt field in dark outer space. 3D animation close tracking shot. Rock formations of cosmic debris and giant Meteorites. Celestial objects on stars background. Dust nebula haze low light. 3D ...

Our solar system has always seemed a vast place, even to the most ancient astronomers who knew little of the universe other than what the sun, moon, and stars could reveal to the naked eye.

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects. A surprising chemical difference between Pluto and Sedna, another dwarf ...

The idea of Ceres having water is not entirely new. The dwarf planet was discovered in 1801, then it was just regarded as an asteroid, and since 2005, it has been officially regarded as a dwarf planet ...

A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper Belt, is helping scientists nail down their respective masses, a new study reports. "Kuiper ...

Some people in town today for the Yakima River Canyon Marathon may have been looking for a little running inspiration.

Astronomers have detected mysterious X-ray signals coming from a nearby white dwarf star for more than 40 years. We may now know where they’re coming from – the death throes of a planet being ...