Science Fantasy has these relationships to other tropes:

parents kids shares a parent with:
Science Fiction
Speculative Fiction
Wizards From Outer Space
parent child
FantasySword And Sorcery
Science FictionSteam Punk
FantasyGaslamp Fantasy
''Urban Fantasy
''High Fantasy
''Low Fantasy
''Dark Fantasy
Science FictionSpace Opera
''Space Western
''Planetary Romance
''Cyber Punk
''Military Science Fiction
Speculative FictionScience Fiction
''Magic A Is Magic A
You'll need to Get Known if you want to add or modify these relationships.