Luke Jew talks about inflation, the process that scientists believe happened at the very start of our universe and is responsible for all the large scale structures that we see around us.

Dark Matter - Are we still in the dark?

Find out more about our night sky, from new planets to far-off galaxies and the vastness of the Universe. A series of short talks and presentations for the general public from leading astronomy researchers at the Oxford University Physics department - http://www.physics.ox.ac.uk/