Takeoff, especially the vertical takeoff of a rocket or helicopter.
- The launch timing is dictated by both the position of the space station and NASA's desire to hold a daylight lift-off so it can photograph the spacecraft during its climb to orbit and watch out for possible damage.
- If all goes well with the test, the countdown will continue to a lift-off at 16: 39 CEST on Tuesday.
- The next two lift-offs occurred around the 17th.
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