/u/agent_uno's posts in /r/askscience

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When knife throwing or axe throwing, how does the blade always hit the target, and does it matter if you throw it blade/handle first?

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Would aerodynamics be different on other terrestrial worlds depending upon gravity and pressure, or would they function fundamentally the same as on earth, but with sliding variables?

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In the show The Expanse, they fix a hull breach with a plastic notepad cover and some sealant. Would a flimsy piece of plastic actually seal a hull breach in a vacuum?

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Prior to the introduction of the Segway, their marketing promised that “It” would change the way of life, and people would build cities around “it”. Has anything significant changed since “it” was released?

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When the moon is crescent and you can still make out the full disc near dusk/dawn, was this always visible in the past? If so, how did pre-modern astronomers/scientists explain it? How did the ancients explain it?

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Is there a sub or resource that tracks power usage/consumption of electrical devices? Specifically heaters?

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When the Tonga volcano occurred, what was the rapidly growing cloud ~1500km due east?

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What was the cloud that appeared and expanded simultaneously east of the Tonga volcano?

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How likely is it that "colds" get shared between humans and pets (dogs)?

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What are examples of human-made items or structures that will survive the elements for hundreds, thousands, or even millions of years? What would they be like at those times?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When knife throwing or axe throwing, how does the blade always hit the target, and does it matter if you throw it blade/handle first?	1
Would aerodynamics be different on other terrestrial worlds depending upon gravity and pressure, or would they function fundamentally the same as on earth, but with sliding variables?	1
In the show The Expanse, they fix a hull breach with a plastic notepad cover and some sealant. Would a flimsy piece of plastic actually seal a hull breach in a vacuum?	1
Prior to the introduction of the Segway, their marketing promised that “It” would change the way of life, and people would build cities around “it”. Has anything significant changed since “it” was released?	1
When the moon is crescent and you can still make out the full disc near dusk/dawn, was this always visible in the past? If so, how did pre-modern astronomers/scientists explain it? How did the ancients explain it?	1
Is there a sub or resource that tracks power usage/consumption of electrical devices? Specifically heaters?	1
When the Tonga volcano occurred, what was the rapidly growing cloud ~1500km due east?	1
What was the cloud that appeared and expanded simultaneously east of the Tonga volcano?	1
How likely is it that "colds" get shared between humans and pets (dogs)?	1
What are examples of human-made items or structures that will survive the elements for hundreds, thousands, or even millions of years? What would they be like at those times?	1