/r/askscience

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Do the past or future currently "exist" in some dimension or form?

665 upvotes • NakedAndBehindYou

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How do we measure the mass of remote objects in space?

664 upvotes • goobyplx

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Other than influenza cases dramatically decreasing due to lockdown, increased sanitization, mask wearing, and social distancing during the COVID-19 pandemic, have we recorded other dramatic decreases in other diseases such as measles, mono, strep, staph, etc?

664 upvotes • intellifone

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Is there any chance of there being an undiscovered simple machine?

663 upvotes • [deleted]

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If a Normal Person with a Healthy Weight Started Consuming Only Water and Vitamins, How Long Could They Survive?

663 upvotes • KirbyTails

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Why do people kill horses almost immediately whenever they break a leg?

663 upvotes • alosia

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Do commercial airplanes fly at around 35,000 feet because their engines are more efficient at those altitudes, or because of the reduction in drag?

663 upvotes • romn97

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I understand how mass is converted into energy (nuclear bomb), but how is energy converted into matter?

662 upvotes • poopops1

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Can you lose your ability to speak if you don't talk for an extended period of time?

662 upvotes • enjoysoranges

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Could a human survive on a planet with a thinner atmosphere and a higher oxygen concentration?

662 upvotes • ImperialistChina

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Do the past or future currently "exist" in some dimension or form?	665	NakedAndBehindYou
How do we measure the mass of remote objects in space?	664	goobyplx
Other than influenza cases dramatically decreasing due to lockdown, increased sanitization, mask wearing, and social distancing during the COVID-19 pandemic, have we recorded other dramatic decreases in other diseases such as measles, mono, strep, staph, etc?	664	intellifone
Is there any chance of there being an undiscovered simple machine?	663	[deleted]
If a Normal Person with a Healthy Weight Started Consuming Only Water and Vitamins, How Long Could They Survive?	663	KirbyTails
Why do people kill horses almost immediately whenever they break a leg?	663	alosia
Do commercial airplanes fly at around 35,000 feet because their engines are more efficient at those altitudes, or because of the reduction in drag?	663	romn97
I understand how mass is converted into energy (nuclear bomb), but how is energy converted into matter?	662	poopops1
Can you lose your ability to speak if you don't talk for an extended period of time?	662	enjoysoranges
Could a human survive on a planet with a thinner atmosphere and a higher oxygen concentration?	662	ImperialistChina