The ten billion dollar telescope is now in position one million miles from earth and finally observing the universe. We've seen galaxies as they were 13 point one billion years ago, water vapour in the atmosphere of a world beyond the solar system, and the glittering landscape of a stellar nursery home to stars many times larger than the sun. So what do these images really mean for astronomers? And what could web mean for us and our understanding of our place in the universe? I mean, sample the guardian science sedator, and this is science weekly.