20 series recommended for anyone who enjoyed Stargate SG-1, ordered by audience score.
Star Trek: The Next Generation
1987
Project Blue Book
2019
Stargate Atlantis
2004
Babylon 5
1994
Star Trek
1966
Farscape
1999
Star Trek: Voyager
1995
UFO
1970
Warehouse 13
2009
Sliders
Star Trek: Enterprise
2001
Lost in Space
2018
Space: Above and Beyond
1965
Andromeda
2000
Buck Rogers in the 25th Century
1979
Seven Days
1998
Earth 2
Earth: Final Conflict
1997
Extant
2014
