Horizon
Plot Summary
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Where to watch free (US)
Seasons (62)
1964
9 episodes
Aired: 1964
1965
24 episodes
Aired: 1965
1966
23 episodes
Aired: 1966
1967
23 episodes
Aired: 1967
1968
24 episodes
Aired: 1968
1969
37 episodes
Aired: 1969
1970
37 episodes
Aired: 1970
1971
32 episodes
Aired: 1971
1972
33 episodes
Aired: 1972
1973
32 episodes
Aired: 1973
1974
33 episodes
Aired: 1974
1975
26 episodes
Aired: 1975
1976
30 episodes
Aired: 1976
1977
23 episodes
Aired: 1977
1978
24 episodes
Aired: 1978
1979
25 episodes
Aired: 1979
1980
25 episodes
Aired: 1980
1981
27 episodes
Aired: 1981
1982
22 episodes
Aired: 1982
1983
24 episodes
Aired: 1983
1984
22 episodes
Aired: 1984
1985
16 episodes
Aired: 1985
1986
22 episodes
Aired: 1986
1987
22 episodes
Aired: 1987
1988
25 episodes
Aired: 1988
1989
20 episodes
Aired: 1989
1990
20 episodes
Aired: 1990
1991
23 episodes
Aired: 1991
1992
19 episodes
Aired: 1992
1993
21 episodes
Aired: 1993
1994
21 episodes
Aired: 1994
1995
20 episodes
Aired: 1995
1996
16 episodes
Aired: 1996
1997
15 episodes
Aired: 1997
1998
18 episodes
Aired: 1998
1999
14 episodes
Aired: 1999
2000
19 episodes
Aired: 2000
2001
11 episodes
Aired: 2001
2002
18 episodes
Aired: 2002
2003
19 episodes
Aired: 2003
2004
18 episodes
Aired: 2004
2005
20 episodes
Aired: 2005
2006
19 episodes
Aired: 2006
2007
9 episodes
Aired: 2007
2008
17 episodes
Aired: 2008
2009
18 episodes
Aired: 2009
2009-2010
14 episodes
Aired: 2009
2010-2011
15 episodes
Aired: 2010
2011-2012
13 episodes
Aired: 2011
2012-2013
16 episodes
Aired: 2012
2013-2014
11 episodes
Aired: 2013
2014-2015
18 episodes
Aired: 2014
2016
16 episodes
Aired: 2016
2017
15 episodes
Aired: 2017
2018
13 episodes
Aired: 2018
2019
6 episodes
Aired: 2019
2020
8 episodes
Aired: 2020
2021
4 episodes
Aired: 2021
2022
4 episodes
Aired: 2022
2024
1 episode
Aired: 2024
2025
4 episodes
Aired: 2025