From being theoretical curiosities predicted by mathematics, to objects we now have direct observational evidence of: black holes. They have a surprisingly wide-ranging effect on the structures we see in the Universe. We have some idea about what goes on inside a black hole, and a better idea what goes on around one. This talk examines how we first ... Read more
An offbeat look at Newton's theory of gravity - featuring hollow Earths, counter-Earths Trojan asteroids, Kirkwood gaps, Lagrangian nodes, the three-body problem, and those mysterious beasts rumoured to haunt Surrey playing fields and Bodmin Moor. Already delivered on two continents!