Gresham College provides outstanding educational talks and videos for the public free of charge. There are over 2,500 videos available on our website. Your support will help us to encourage people's love of learning for many years to come.
This talk will review the dramatic consequences on what we observe in the night sky that arise purely from the consequences of light-travel time effects.
This talk will explain how the speed of light was first measured, and how an obscure but brilliant patent clerk in Bern, Switzerland by the name of Albert Einstein deduced that the speed of light is the upper speed limit for everything in the Universe.
Where did we come from? This question has always intrigued human thought. Professor Silk will describe the modern scientist's view of the origin of the cosmos.
Professor Silk will describe the state of our knowledge of neutron stars and black holes, and how new observations of gravity waves are poised to revolutionise this field.