3 ms·
Escape velocity is a velocity to escape gravitational field. Orbit velocity is a velocity to orbit a thing inside its gravitational field. For example, ISS has
by thesz 6y ago
Escape velocity is a velocity to escape gravitational field. Orbit velocity is a velocity to orbit a thing inside its gravitational field.
For example, ISS has orbit speed of about 7.7 km/s at 350 km above the ground. Orbit speed "at the surface" of Earth is about 8km/s, I believe.
- PopeDotNinja 6y agoThanks for the clarification.
- perl4ever 6y agoMy point, not to be overly disrespectful, is that suborbital flights are so different from what SpaceX has done that they seem like party tricks, not stepping stones. In the big picture, it's not a huge amount wasted, I was just remarking on it being less significant in retrospect than one might have hoped.