The Sky at Night celebrates its 800th episode while filming takes place under the coronavirus lockdown.

Chris Lintott explores how some astronomers are managing to continue making observations by controlling telescopes as far away as Hawaii from a laptop in their bedrooms in Belfast. Maggie Aderin-Pocock investigates how members of the public can get involved in analysing data from Mars, even when they are confined to their homes. And Pete Lawrence points out some treats in the night sky that we can all see if we keep looking up even when we're locked down.

Plus a treat from the archives of the last 799 episodes set to a specially commissioned new arrangement of the show's famous theme tune.

The Sky at Night team explore the life and death of stars. Chris Lintott investigates the strange dimming of Betelgeuse, which caused some speculation that it might be about to explode into a supernova. And Maggie Aderin-Pocock reports on the recent discovery of the biggest and brightest supernova ever observed.

Lucie Green discovers how historical drawings that pre-date the invention of the telescope are helping us to predict solar activity, and Pete attempts to photograph our very own star, the Sun.

The team also pay tribute to pioneering astronomer Margaret Burbidge, who died on 5 April 2020 at the age of 100, whose work led to the understanding that we are all made of stardust.