> If you want to be more specific, e.g. include gravity > then you can't say "the rocket equation". You may not be able to say "the rocket equation" in th

> If you want to be more specific, e.g. include gravity > then you can't say "the rocket equation". You may not be able to say "the rocket equation" in that context, but NASA does. [1] [1] https://www.nasa.gov/mission_pages/station/expeditions/expedition30/tryanny.html https://www.nasa.gov/mission_pages/station/expeditions/exped...