Brian Cox and Robin Ince host a close encounter of the first kind with comedian Lucy Beaumont, astronomer Maggie Aderin-Pocock, Prof Tim O’Brien and science presenter Dallas Cambell to ask if UFOs and aliens have visited Earth.
1994
2006
1993
1990
1982
2002
2005
1992
2003
1997
2004
2007
2019
1964
2010
2018
2021
