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Channel: Comments on Q: Asteroid mining. Why?
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By: Gol

@The Physicist Perhaps ancient aliens gave it to him?

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By: Neruz

@Gol Unlikely, it shows all the typical signs of human make. If aliens made the knife we would expect it to be the product of anomalous forging methods, instead it appears to be made from a chunk of...

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By: Jeff

In an older post (I don’t remember which one) you had said “…there’s ion drives but a mouse fart is more powerful, so meh”. Or something along those lines. What’s changed that we are already orbiting...

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By: Neruz

@Jeff Because space. Once you’re in space proper you are free of the confines of friction, this means that even mouse farts can create a measurable and permanent change in velocity. Not much of one,...

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By: The Physicist

@Jeff Human fart. That’s still more or less the same. Rockets are very impressive, but they only fire for a few minutes. Ion drives fire continuously for months, giving that tiny force a chance to add...

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By: Jeff

Let’s say an ion drive and a Saturn V were to do a drag race, both starting their engines at the same time. How long would it take the ion drive to catch the Saturn V and how far away would they be...

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