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
LifeReturn to Titan: Why this icy world is our best bet to find lifeTantalising clues suggest the weird seas on Saturn’s largest moon contain a chemical cocktail capable of spawning life. A daring mission now aims to find outFeatures