Wiktionary
n. (context slang English) Any NASA airplane that briefly provides a nearly weightless environment by flying on a parabolic flight path; used to train astronauts or conduct research.
Usage examples of "vomit comet".
Or just like the sims she had done in the Vomit Comet, or the big weightless training facility, the pool at Ellington AFB.
Jamie had also flown three flights on the Vomit Comet, the big jet transport plane that simulated zero g by diving from high altitude, then pulling up into a long parabolic arc that produced about half a minute of gut-wrenching weightlessness.
Their own little version of the Vomit Comet, Jamie said to himself.
From her training and her rides onboard the Vomit Comet, Megan knew that the descent through the earth's atmosphere would be even more jarring than the liftoff.