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.
2002
1990
1992
1997
1988
1995
1960
1963
2010
1999
2006
1996
2004
2005
2008
