Talk:gravitational propulsion

Google ; "Gravitational Propulsion

Alexa  ; "Gravitational Propulsion

[1]

New Page address for same data, as above; moved.

[2]

20-NOV-23: Propulsion's wiktionary article says "Propulsion" is countable *OR* uncountable. I see no reason why adding the modifier "gravitational" should change the countability.