/u/-rabid-'s posts in /r/askscience

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How far does an object have to be from Earth before it's no longer considered "in orbit", even if it's still moving in a really big circle with Earth in the centre?

6 upvotes

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Would it be possible to make a firearm that uses electricity to ignite the propellant, then the recoil spins a dynamo, which keeps the battery charged?

1 upvotes

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I'm 30 years old. With celestial motion, how far have I traveled in my lifetime?

1 upvotes

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If Earth was shrunk to a diameter of one meter, what would the average depth of the oceans be?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How far does an object have to be from Earth before it's no longer considered "in orbit", even if it's still moving in a really big circle with Earth in the centre?	6
Would it be possible to make a firearm that uses electricity to ignite the propellant, then the recoil spins a dynamo, which keeps the battery charged?	1
I'm 30 years old. With celestial motion, how far have I traveled in my lifetime?	1
If Earth was shrunk to a diameter of one meter, what would the average depth of the oceans be?	1