It is the stuff of nightmares and, until now, Hollywood thrillers. A huge asteroid is on a catastrophic collision course with Earth and mankind is poised to go the way of the dinosaurs. To save the day, Nasa now plans to go where only Bruce Willis has gone before. The US space agency is drawing up plans to land an astronaut on an asteroid hurtling through space at more than 30,000 mph. It wants to know whether humans could master techniques needed to deflect such a doomsday object when it is eventually identified. The proposals are at an early stage, and a spacecraft needed just to send an astronaut that far into space exists only on the drawing board, but they are deadly serious. A smallish asteroid called Apophis has already been identified as a possible threat to Earth in 2036. Chris McKay of the Nasa Johnson Space Centre in Houston told the website Space.com: ‘There’s a lot of public resonance with the notion that Nasa ought to be doing something about killer asteroids … to be able to send serious equipment to an asteroid. ‘The public wants us to have mastered the problem of dealing with […]