Space
Leaving, and surviving outside.
Space
Why do astronauts float if gravity is still there?
They are not beyond gravity — they are falling, continuously, and so is their spacecraft, so nothing pushes back against them.
6 min readintermediate
Space
Why are rockets launched eastward?
The Earth's surface is already moving east at up to about 1,670 km/h at the equator, and launching in that direction means the rocket starts with that speed for free.
5 min read