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1974 • 13 Episodes
Season 1 of NOVA premiered on March 3, 1974
1974 • 17 Episodes
Season 2 of NOVA premiered on November 3, 1974
1976 • 20 Episodes
Season 3 of NOVA premiered on January 4, 1976
1977 • 19 Episodes
Season 4 of NOVA premiered on January 5, 1977
1978 • 21 Episodes
Season 5 of NOVA premiered on January 4, 1978
1979 • 19 Episodes
Season 6 of NOVA premiered on January 4, 1979
1980 • 20 Episodes
Season 7 of NOVA premiered on January 15, 1980
1981 • 20 Episodes
Season 8 of NOVA premiered on January 6, 1981
1982 • 19 Episodes
Season 9 of NOVA premiered on January 10, 1982
1983 • 21 Episodes
Season 10 of NOVA premiered on January 18, 1983
1984 • 20 Episodes
Season 11 of NOVA premiered on January 17, 1984
1985 • 20 Episodes
Season 12 of NOVA premiered on January 15, 1985
1986 • 21 Episodes
Season 13 of NOVA premiered on January 21, 1986
1987 • 21 Episodes
Season 14 of NOVA premiered on January 20, 1987
1988 • 22 Episodes
Season 15 of NOVA premiered on January 19, 1988
1989 • 20 Episodes
Season 16 of NOVA premiered on January 17, 1989
1990 • 20 Episodes
Season 17 of NOVA premiered on January 9, 1990
1991 • 19 Episodes
Season 18 of NOVA premiered on January 8, 1991
1992 • 20 Episodes
Season 19 of NOVA premiered on January 14, 1992
1993 • 20 Episodes
Season 20 of NOVA premiered on January 5, 1993
1994 • 20 Episodes
Season 21 of NOVA premiered on January 18, 1994
1995 • 13 Episodes
Season 22 of NOVA premiered on January 8, 1995
1995 • 19 Episodes
Season 23 of NOVA premiered on October 10, 1995
1996 • 21 Episodes
Season 24 of NOVA premiered on October 1, 1996
1997 • 20 Episodes
Season 25 of NOVA premiered on October 7, 1997
1998 • 20 Episodes
Season 26 of NOVA premiered on October 6, 1998
1999 • 21 Episodes
Season 27 of NOVA premiered on October 5, 1999
2000 • 17 Episodes
Season 28 of NOVA premiered on October 24, 2000
2001 • 17 Episodes
Season 29 of NOVA premiered on October 2, 2001
2002 • 16 Episodes
Season 30 of NOVA premiered on September 3, 2002
2003 • 18 Episodes
Season 31 of NOVA premiered on September 30, 2003
2004 • 18 Episodes
Season 32 of NOVA premiered on September 28, 2004
2005 • 20 Episodes
Season 33 of NOVA premiered on September 20, 2005
2006 • 15 Episodes
Season 34 of NOVA premiered on September 5, 2006
2007 • 17 Episodes
Season 35 of NOVA premiered on October 9, 2007
2008 • 17 Episodes
Season 36 of NOVA premiered on October 7, 2008
2009 • 18 Episodes
Season 37 of NOVA premiered on October 6, 2009
2010 • 18 Episodes
Season 38 of NOVA premiered on October 19, 2010
2011 • 19 Episodes
Season 39 of NOVA premiered on September 7, 2011
2012 • 20 Episodes
Season 40 of NOVA premiered on October 10, 2012
2013 • 22 Episodes
Season 41 of NOVA premiered on September 11, 2013
2014 • 22 Episodes
Season 42 of NOVA premiered on September 10, 2014
2015 • 22 Episodes
Season 43 of NOVA premiered on September 16, 2015
2016 • 28 Episodes
Season 44 of NOVA premiered on September 7, 2016
2018 • 23 Episodes
Season 45 of NOVA premiered on January 10, 2018
2019 • 23 Episodes
Season 46 of NOVA premiered on January 2, 2019
2020 • 16 Episodes
Season 47 of NOVA premiered on February 5, 2020
2021 • 25 Episodes
Season 48 of NOVA premiered on January 13, 2021
2022 • 19 Episodes
Season 49 of NOVA premiered on February 1, 2022
2023 • 18 Episodes
Season 50 of NOVA premiered on February 1, 2023
2024 • 18 Episodes
Season 51 of NOVA premiered on January 31, 2024
2025 • 8 Episodes
Season 52 of NOVA premiered on January 22, 2025