The search for new objects, including new planets, in our solar system has turned up some interesting finds. There have been a few failures over the years too.
Missions including ExoMars, Juno and Rosetta could make some major discoveries in 2016.
A new planet in our solar system? Let's get direct proof before we start naming it.
Scientists say they have evidence that the solar system has an extra planet, bigger than Earth and way beyond Pluto. So how come we never knew this before?
From the high-speed journey to Jupiter to solar eclipses, meteor showers and planetary alignments visible in the skies above -- add these space highlights to your 2016 calendar.
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.
Jupiter had a big influence on how our solar system's planets formed. New research – led by a high school student – tried to nail down how rare Jupiter analogs really are in other planetary systems.
Why finding molecular oxygen on comet 67P is a really big deal.
The early solar system was a busy place with plenty of meteorite impacts on the new planets and moons. But finding evidence of such impacts on Earth can be tricky.
A rare super blood moon visible from parts of the Earth this month will delight those people lucky enough to see it. But why has this marvel of the solar system got some people so worried?
Ice is everywhere in the solar system and there may even be liquid water beneath the surface of a number of planets. But could we ever get to it?
How a bunch of pebbles could have created Jupiter, Saturn, Neptune and Uranus.
Studying the young, Jupiter-sized planet 51 Eridani b opens a window into our solar system's past.
In the long lead-up to our ultimate flyby of Pluto, space science has reconfigured our notions of what it means to be a solar system, a planet, a world.
What can the data from New Horizons tell us about the dwarf planet's five moons?
Lack of impact craters intrigues space experts who say it suggests the dwarf planet may be geologically active.
Now the flypast of Pluto is over the space probe New Horizons will begin sending the data back to Earth. It will take many months but what will it reveal about the dwarf planet?
Exactly half a century ago the US Mariner 4 made the first flyby of Mars. But why are we still doing flybys today?
NASA's New Horizons spacecraft is nearly two decades old. Is that a problem?