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A comment on First possible interstellar object detected in our solar system. Parent comment

Re:First possible interstellar object detected in our solar ... by b0bdog on Friday October 27, 2017 @08:54AM (#15567803)
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 mind, you meant the velocity needed to catch up with it.

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Re:First possible interstellar object detected in our solar ... by throwanem on Friday October 27, 2017 @08:56AM (#15567818)
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.

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