Suddenly, space is getting interesting again. After decades of going boldly nowhere in low Earth orbit, Man, or rather his robotic emissaries, have made some startling discoveries in our Solar System. Cold, distant Pluto is – who would have thought it? – turning out to be one of the most interesting planets (yes, it is a planet) in the Solar System. Before the New Horizons probe turned up earlier this month, astronomers assumed it would be a dull, grey cratered rock. [SNIP] If we find life of any kind out there – whether it be Martian microbes (we have several...