escape velocity

noun2

1. •
   The minimum speed needed to escape the gravitational field of a planet or other body.

   • The gravitational force exerted by a planet determines its surface gravity and escape velocity. — 1996
2. •
   (figurative) A major breakthrough or milestone; momentum.

   • “All signs point to Netflix having reached escape velocity, with subscribers scaling far faster than investors expected,” Mr. Greenfield said. — 2024