by going to visit a large number, eight asteroids in total, over the mission lifetime, we'll really better understand all about the asteroids. so if you only see one, maybe you got a bit of a funny one but by seeing eight, you get to really understand what's going on in this population. scientists want lucy to test their theory that the early solar system was juggled around by gravity, with some objects being thrown in and others out — just like billiard balls. but they'll need patience. lucy's expected to be operating around asteroids for the next 12 years. duncan kennedy, bbc news. after an influx of visitors and overnight campers to the lake district this summer, a major clean—up operation's taken place on the islands of derwentwater. volunteers canoed over to them for a final litter—pick before winter, and found serious damage like live trees burned for bonfires. phil chapman reports.