Starting point of many modern missions (9)
I believe the answer is:
launchpad
(Other definitions for launchpad that I've seen before include "Countdown site" , "Place for rocket" .)
I've seen this clue in the LA Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.