Transit of Venus: A rare event is witnessed in Greenwich, as Venus passes between the Sun and the Earth for the first time in a hundred years. NASA Telescope: A look at clouds of particles that tell key stories about the history of the universe. Romania Rocket Launch: Here we witness the launching of Romania's attempt at heading for the stars. Gamma Ray Probe: We are introduced to the swift satellite probe that picks up random bursts of gamma rays in the universe. Space Expo: A new exhibition that looks at all the facets of space and its future that captivate the human race. Tumbleweed: NASA scientists use the novel idea of wind to gather information for its Mars Rover expedition. Solar Sail: The dream of NASA to propel a vessel to the outer reaches of space using a giant sail that captures and harnesses energy from the sun. Ariane 5: This huge telecommunications satellite is a key project for the European's foray into the space race. Spaceship One: A look at the first private entries into the space world. Astronomy: We head to Greenwich in London for National Astronomy Week and the exhibitions on display.