Life begins at 40...

Tomorrow is the 40th anniversary of the launch of Voyager 1, the first man-made object to leave the Solar System and, of course, the Satellite 4 Spaceship-of-Honour. Currently it is still speaking to us from a distance of 13.0 million miles making it NASA's longest-lived and farthest mission. NASA is holding a special celebratory event at 17:30 UK time tomorrow which you can watch live on NASA TV.