In two days' time [Wednesday 10th August] NASA will launch the biggest spacecraft ever to be sent to Mars - Mars Reconnaissance Orbiter (MRO). UK scientists are involved with MRO’s Mars Climate Sounder instrument that will profile the atmosphere of Mars. Additionally, MRO carries high resolution cameras to provide the most detailed picture yet of the Red Planet’s surface, including the potential to trace lost Mars missions such as the UK’s Beagle 2.