3 ms·

That doesn't make sense. If the Earth is 12,000km in diameter, surely it will take a few minutes to traverse and not multiple times per second? Edit: Oh never

• throwanem 9y ago
  Of course you're right. Evidently I cannot accurately exponentiate before coffee! But, yes, the velocity difference is a killer. The closest we've ever come was the Apollo-Saturn stack, and even that only had ~9km/s left over after reaching escape velocity.