VideoExploring the wonders of the solar system Let planetary scientist Sheila Kanani take you on a whirlwind journey to the furthest reaches of our solar system Video
SpaceThe solar system has too many moons – it's time for a cull Designating rocks just a few kilometres across as moons is misleading and ridiculous. We need to do a Pluto and cut moons down to size, argues Leah CraneComment