A new golden age of space exploration is set to begin next month with the launch of the first in a series of missions to explore comets. On 1 July the American space agency (Nasa) will send up a probe destined to fly past two of the icy bodies. The Comet Nucleus Tour (Contour) will be followed next January by the launch of a daring European Space Agency (Esa) mission. Rosetta will chase a speeding comet and then, for the first time ever, try to land on it.http://news.bbc.co.uk/hi/english/sci/tech/newsid_2057000/2057529.stm
