How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's ...

The New Horizons Pluto flyby revealed unexpectedly complex geological features on dwarf planets, prompting further investigation into the diversity within the Kuiper Belt. Several dwarf planets, ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

On January 1, 1801, a Sicilian astronomer named Giuseppe Piazzi discovered the dwarf planet Ceres orbiting the sun between ...

Nobody was using the term Dwarf Planet until 2006 when the International Astronomical Union (IAU) had a vote to redefine what a planet actually is. When the vote passed, Pluto was no longer considered ...

A dwarf planet once believed to be an asteroid is visible in our night skies month, and it shares a namesake with a common breakfast. The tiny planet Ceres is named after the Roman goddess of ...

Just on the outskirts of our solar system exists the dwarf planet Quaoar, and recent observations of the planet found a dense ring around it, but scientists can't figure how – or why – it's there.

Los astrónomos se han preguntado durante mucho tiempo cómo Caronte, una luna tan grande, llegó a orbitar Plutón. Una nueva simulación sugiere cómo acabó allí. By Jonathan O’Callaghan Charon is large ...

Our solar system is much like a trail of microcosmic breadcrumbs: Follow the molecular bits as far back as they go, and you'll learn a thing or two about where many of our planets and other celestial ...

WASHINGTON (Reuters) -Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it ...

Deep in the outer solar system, billions of miles from Earth, lurks a realm of small, icy worlds called dwarf planets. Astronomers know relatively little about these dim and distant objects, but in ...