In a little under 12 hours as I write this post, one of the most exciting celestial missions will come to a dramatic climax. At 10:31pm PDT (6:31am in the UK) Mars Curiosity Rover will crash through the Martian atmosphere, in an event experts are dubbing "7 minutes of terror". You can watch the whole thing play out live on the mission website, where you can also follow the robots mission as it spends one Martian year on the planet's surface.