The post Scientists Might Just Have Discovered Another Dwarf Planet Sibling For Pluto first on TwistedSifter. In 2006, Ceres – located in our solar system’s main asteroid belt – was officially ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between five and 18, plus hundreds of potentially undiscovered ones, depending on ...

From that day forward, astronomers have officially classified Pluto as a “dwarf planet,” one of several orbiting our Sun. To this day, some who grew up believing that Pluto was a full-fledged ...

This new dwarf planet may exist at the edge of the solar system, possibly disproving Planet Nine's existence. This is the story of that newly encountered planet.

Simultaneously cooling Pluto while energizing atmospheric molecules to allow them to escape into space, Pluto's haze plays a key role in the planet's energy balance.

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

Discovery of 2017OF201, a large trans-Neptune Object, challenges previous beliefs about the Kuiper Belt and hints at the existence of a theoretical Planet Nine.

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 travels on a ...

Although it is substantially smaller than Pluto, which is 1,477 miles (2,377 km) across, 2017 OF 201 is nevertheless large enough to be classified as a dwarf planet. Problems for Planet Nine However, ...

Science Search for 'Planet Nine' Yields Unexpected Discovery Less than 1% of this dwarf planet candidate's orbit is close enough to detect, which means astronomers are lucky to have caught it at all.