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Only show posts with narrations

"A ring of rope is wrapped around the Earth. With only 6.3 additional meters of slack, the rope would hover 1 meter off the ground." Does this surprising fact have a three dimensional equivalent?

3069 upvotes • dysar

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AskScience AMA Series: I'm Dr. Matt O'Dowd. AMA about PBS Space Time, my new program to map black holes, and our new film Inventing Reality!

3068 upvotes • AskScienceModerator

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How do satellites calculate co2 emissions?

3067 upvotes • cvielma

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How does any photon reach exactly the energy needed to excite a particular atom?

3067 upvotes • tazz2500

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Why can't we prescribe a "medical tapeworm" to an obese patient?

3066 upvotes • Mister_MacEff

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How can a maglev train be energy efficient?

3064 upvotes • DrTobiasFunke23

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Why do train tracks rest on a bed of gravel/pebbles?

3062 upvotes • DeathStarVet

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Why do rings around planets like Saturn form as rings, as in why do they have a uniform shape, with all the debris rotating on the same axis?

3062 upvotes • Low_Advertising_473

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In theory, what is the smallest computer we can make?

3060 upvotes • ItsameMiririo

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AskScience AMA Series: We are women scientists from the Homeward Bound expedition, recently returned from the inaugural voyage to Antarctica! Ask us anything!

3059 upvotes • AskScienceModerator

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
"A ring of rope is wrapped around the Earth. With only 6.3 additional meters of slack, the rope would hover 1 meter off the ground." Does this surprising fact have a three dimensional equivalent?	3069	dysar
AskScience AMA Series: I'm Dr. Matt O'Dowd. AMA about PBS Space Time, my new program to map black holes, and our new film Inventing Reality!	3068	AskScienceModerator
How do satellites calculate co2 emissions?	3067	cvielma
How does any photon reach exactly the energy needed to excite a particular atom?	3067	tazz2500
Why can't we prescribe a "medical tapeworm" to an obese patient?	3066	Mister_MacEff
How can a maglev train be energy efficient?	3064	DrTobiasFunke23
Why do train tracks rest on a bed of gravel/pebbles?	3062	DeathStarVet
Why do rings around planets like Saturn form as rings, as in why do they have a uniform shape, with all the debris rotating on the same axis?	3062	Low_Advertising_473
In theory, what is the smallest computer we can make?	3060	ItsameMiririo
AskScience AMA Series: We are women scientists from the Homeward Bound expedition, recently returned from the inaugural voyage to Antarctica! Ask us anything!	3059	AskScienceModerator