/r/askscience

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The Tsar Bomba had a yield of 50 megatons. According to Wikipedia "the bomb would have had a yield in excess of 100 megatons if it had included a uranium-238 tamper". Why does a U-238 tamper increase the yield as opposed to other materials or no tamper at all?

8030 upvotes • Pukalo_Reincarnate

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Is there a spot where the big bang happened? do we know where it is? Is it the center of the universe? If you go there, is there a net force of zero acting on you in all directions ( gravity)

8023 upvotes • skylerchaikin

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Do mosquitoes have a preference on blood type? Do some people have more “attractive” blood?

8023 upvotes • FuriousFighter13

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Do deep sea creatures have a sleep schedule?

8021 upvotes • StormBladeRunner

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If fevers are the immune system's response to viral/bacterial infection, why do with try to reduce them? Is there a benefit to letting a fever run its course vs medicinal treatment?

8019 upvotes • cam_wing

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Crows are all over the world, but where are crows naturally from and what kind of effect did they have as an invasive species?

8016 upvotes • DuploJamaal

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If a nuclear bomb went off in Boston harbor could scientists tell after the fact who had manufactured it, do they leave distinct radioactive signatures?

8010 upvotes • plato1123

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When you diet and exercise, where does the fat you burn physically go and how?

8009 upvotes • Nintendophile79

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Will we see an eradication or serious reduction in other illnesses as a result of social distancing and hand washing and other measures during COVID?

8004 upvotes • [deleted]

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When dolphins open their eyes above water, are things blurry like when humans open their eyes below water?

7997 upvotes • laughs_at_things_

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
The Tsar Bomba had a yield of 50 megatons. According to Wikipedia "the bomb would have had a yield in excess of 100 megatons if it had included a uranium-238 tamper". Why does a U-238 tamper increase the yield as opposed to other materials or no tamper at all?	8030	Pukalo_Reincarnate
Is there a spot where the big bang happened? do we know where it is? Is it the center of the universe? If you go there, is there a net force of zero acting on you in all directions ( gravity)	8023	skylerchaikin
Do mosquitoes have a preference on blood type? Do some people have more “attractive” blood?	8023	FuriousFighter13
Do deep sea creatures have a sleep schedule?	8021	StormBladeRunner
If fevers are the immune system's response to viral/bacterial infection, why do with try to reduce them? Is there a benefit to letting a fever run its course vs medicinal treatment?	8019	cam_wing
Crows are all over the world, but where are crows naturally from and what kind of effect did they have as an invasive species?	8016	DuploJamaal
If a nuclear bomb went off in Boston harbor could scientists tell after the fact who had manufactured it, do they leave distinct radioactive signatures?	8010	plato1123
When you diet and exercise, where does the fat you burn physically go and how?	8009	Nintendophile79
Will we see an eradication or serious reduction in other illnesses as a result of social distancing and hand washing and other measures during COVID?	8004	[deleted]
When dolphins open their eyes above water, are things blurry like when humans open their eyes below water?	7997	laughs_at_things_