3 ms·
As a fun aside, there are plenty of rocket engines that run on hydrogen + oxygen. For instance the Space Shuttle Main Engine [1] was fueled by hydrogen + oxygen
by somenameforme 2y ago
As a fun aside, there are plenty of rocket engines that run on hydrogen + oxygen. For instance the Space Shuttle Main Engine [1] was fueled by hydrogen + oxygen, which means its exhaust was literally water vapor.
[1] - https://en.wikipedia.org/wiki/RS-25 https://en.wikipedia.org/wiki/RS-25