The Canada-France-Hawaii Telescope has spotted a new dwarf planet.
It turns out that a common physical process called diffusion can explain the orbits of faraway minor planets – no need for a Planet Nine.
Pluto is a dwarf planet but that doesn’t make it any less worthy of our attention.
A group of astronomers are trying to reclassify Pluto as full 'planet'. But there are good reasons to leave our classification system alone, and this doesn't mean Pluto is any less interesting.
Ceres’ Haulani Crater shows evidence of landslides from its crater rim.
The latest data from the Dawn space probe points to underground ice flows and a water vapour atmosphere.
Ceres, as seen by NASA’s Dawn spacecraft on December 10, around a crater chain called Gerber Catena.
Dawn's mission director and chief engineer describes his 'dream come true' job – and how the new data coming back from Ceres could unlock some of the secrets of the earliest days of our solar system.
Ceres: a bright spot in planetary exploration.
Is it a dwarf planet, an asteroid or a comet? All of the above? Well, with the latest results about Ceres, researchers aren't entirely sure anymore.
It’s all happening! New Horizons’ science team members react to crisp shots of Pluto.
New Horizons mission members have worked on the project for even longer than it's taken the spacecraft to get to Pluto. They've planned, built and researched – and now their efforts are paying off.
What is the bright spot of Ceres? Not long till we find out.
NASA's Dawn spacecraft hasn't reached optimum orbit around Ceres but the data it's returning has already got scientists excited.
Two views of Ceres acquired by NASA’s Dawn spacecraft ten hours apart on Feb. 12, 2015, from a distance of about 52,000 miles as the dwarf planet rotated.
With increasing knowledge and familiarity, we'll no longer be able to identify meaningful criteria to keep these good planets down.
Artist’s impression of New Horizons as it swings past the dwarf planet Pluto, in July 2015.
While the Mars Rovers and the Rosetta spacecraft will continue to make headlines in 2015, the stage is set for the solar system’s next great mission – the Pluto-bound New Horizons. Discovered in 1930…
A dwarf planet first seen in 2007 has been found to have a surface half-covered in water ice that once flowed from ancient…