You may have seen that a few days ago, scientists announced that they had confirmed the Voyager-1 probe finally left our Solar System on 25th August 2012, after having been launched on 5th September 1977. In this time, the probe photographed in spectacular detail the planets beyond the Asteroid Belt, and has simply kept on travelling away from the Sun towards deep space. It is thought now to be around 19 billion km (19000000000km) from Earth, and any radio signals sent by the craft take 17 hours to reach us due to this insane distance. The power source onboard is believed to still have enough energy to keep Voyager going until 2025, after which it will stop transmitting and simply drift further and further out, carrying its cargo of one gold LP until it is picked up by aliens, absorbed by a star or smacked by a rock. However, for now it can still provide us with information, despite its cameras having been disabled and several of its instruments turned off. It detected a change in the flow and temperature of particles in order to signal its passage through the heliopause at the edge of our Solar System, and with any luck will continue to send us back information about the composition of an area of the universe that we can never otherwise reach and which until now we knew nothing (or next to nothing) about. It’s just a shame that the cameras weren’t still working, as it would be amazing to see our sun from such a distance and to get a glimpse of our galaxy from such a different vantage point.