Pioneering scientist Professor Colin Pillinger, who was the driving force behind Britain's Mars lander Beagle 2, suffered a brain haemorrhage at his home in Cambridge.
The professor, who was awarded the CBE in 2003, later died in hospital, a spokesman said.
More top news
Nick Clegg has set out his final conditions for any coalition involving the Liberal Democrats, with increasing public sector pay a priority.
Floyd Mayweather preserved his unbeaten record with a unanimous points victory over Manny Pacquiao in their superfight
A group of nearly 300 Nigerian women and children rescued from Boko Haram extremists by the military have been brought to a refugee camp.