the.com/blastoff
The moment gravity gets fired and physics files a complaint.
means The instant a rocket ignites and leaves the launch pad, beginning its ascent.
from American Space Age slang from the late 1940s, fusing the violent blast of rocket fuel with the off of departure, popularized as countdowns became prime-time television.
Force neededEscape velocity is about 25,000 mph.
Countdown originBorrowed from a 1929 German silent film.
Fuel burnSaturn V drank 20 tons per second.