The Sky at Night: Time Lord

In an anniversary programme, Patrick Moore travels back in time to see the first recording of The Sky at Night which took place 50 years ago this month. He talks to his earlier self about astronomy back in 1957, and discusses how things have changed in half a century. He then time travels to 2057 where the 'virtual' Patrick, saved in the BBC computer, is now celebrating 100 years of making The Sky at Night and talks to Dr Brian May about the discovery of life on Mars.