The latest data from the Dawn space probe points to underground ice flows and a water vapour atmosphere.
From a flyby of Pluto to the search for extrasolar planets and gravitational waves, 2015 was a monumental year for space news.
Prepare to be amazed ...
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.
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.
Everything in space is so far away, but probes bring us closer.
Approaching Ceres, the Dawn spacecraft reveals the dwarf planet in colour for the first time.
NASA's Dawn spacecraft hasn't reached optimum orbit around Ceres but the data it's returning has already got scientists excited.
It's no TIE fighter, but the Dawn probe is driven by the future of spacecraft propulsion: ion engines.
With increasing knowledge and familiarity, we'll no longer be able to identify meaningful criteria to keep these good planets down.