I'm going to follow @AndorianSoup's lead.
Here is my all-time ranking of #SciFi TV shows:
1. #StarTrek (franchise)
2. #TheExpanse
3. #BattlestarGalactica (reboot)
4. #StarWars (franchise)
5. #TheOrville
6. #Babylon5
7. #QuantumLeap
8. #Sliders
9. #VTheFinalBattle (miniseries)
10. #Westworld (1st 2 seasons)