On 1 April 2007, a 50th anniversary semi-spoof edition of the programme was broadcast on BBC One, with Moore depicted as a Time Lord and featured special guests, amateur astronomers Jon Culshaw (impersonating Moore presenting the first "The Sky at Night") and Brian May. On 6 May 2007, a special edition of "The Sky at Night" was broadcast on BBC One, to commemorate the programme's 50th anniversary, with a party in Moore's garden at Selsey, attended by amateur and professional astronomers. Moore celebrated the record-breaking 700th episode of "The Sky at Night" at his home in Sussex on 6 March 2011. He presented with the help of special guests Professor Brian Cox, Jon Culshaw and Lord Rees, the Astronomer Royal.