Space, GPS & MapsAstrodynamics
Escape Speed
Leaving Earth for good needs about 11 kilometers a second
Throw a ball up and it falls back, every time. So how fast would it have to go to never come back at all?
You'll find out
- Why some speed is finally enough
- Why the Moon lets go so easily
- What rockets do differently
Why it matters
Every probe sent to another planet, and every black hole, comes down to this one speed.
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