from jupiter's gravity and the tugging of other moons, deep beneath the frozen surface there's oceans of liquid water. and every place on earth we have liquid water, we have life. so one of nasa's mantras in the european space agency, among others in this group, is follow the water. maybe if we look for where the water is or once was we will have evidence of life that is or once was. and that's all being lined up in the coming decade. yes. why is it that if we bring this down to the prosaic human level that the united states government, which was so committed, if we think back to the 1960s and 1970s, in pushing for space exploration, as a national priority, spending more than 4% of national income on the space programme, why is it that today that figure is down to 0.5% and the us government, frankly, apart from the notion of building a space force for military protection purposes, doesn't really seem that committed to space?