/r/askscience

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Why can I see the wheel spokes on a car as it goes by if I'm not looking directly at it, but if I try to follow the wheels with my eyest hey are all blurred together ? Does the the brain only sample vision outside the center periodically so I get a strobe type affect?

3182 upvotes • ECatPlay

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Do powerful space telescopes able to see back to a younger, smaller universe see the same thing no matter what direction they face? Or is the smaller universe "stretched" out over every direction?

3181 upvotes • Damnaged

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Why do we sometimes have problems telling apart left and right, but not up and down?

3178 upvotes • ifif1000

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If nearly 100 billion solar neutrinos pass through every square centimeter of our body each second, why don't these neutrinos convert neutrons in our bodies into protons, potentially harming us?

3177 upvotes • diavacado

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Is there a way to harness gravity for energy? If so, why do we not discuss it when talking about green energy?

3175 upvotes • Foofymonster

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Why is the speed of light, the speed it is?

3174 upvotes • SailingB0aty

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How do vaccine manufactures plan to test new COVID vaccines such as ones designed for the Delta variant now that a large portion of the population is vaccinated and those that aren't are hesitant to take approved vaccines?

3170 upvotes • FemaleKwH

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How was Avogadro's number derived?

3169 upvotes • Ciltan

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Can depression and other mood disorders decrease mental ability? Can it make you dumber?

3166 upvotes • Dame_Juden_Dench

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How likely is a space craft - such as the James Webb telescope or the ISS - to be hit by a meteorite or space junk and be ruined?

3166 upvotes • disintegrationist

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Why can I see the wheel spokes on a car as it goes by if I'm not looking directly at it, but if I try to follow the wheels with my eyest hey are all blurred together ? Does the the brain only sample vision outside the center periodically so I get a strobe type affect?	3182	ECatPlay
Do powerful space telescopes able to see back to a younger, smaller universe see the same thing no matter what direction they face? Or is the smaller universe "stretched" out over every direction?	3181	Damnaged
Why do we sometimes have problems telling apart left and right, but not up and down?	3178	ifif1000
If nearly 100 billion solar neutrinos pass through every square centimeter of our body each second, why don't these neutrinos convert neutrons in our bodies into protons, potentially harming us?	3177	diavacado
Is there a way to harness gravity for energy? If so, why do we not discuss it when talking about green energy?	3175	Foofymonster
Why is the speed of light, the speed it is?	3174	SailingB0aty
How do vaccine manufactures plan to test new COVID vaccines such as ones designed for the Delta variant now that a large portion of the population is vaccinated and those that aren't are hesitant to take approved vaccines?	3170	FemaleKwH
How was Avogadro's number derived?	3169	Ciltan
Can depression and other mood disorders decrease mental ability? Can it make you dumber?	3166	Dame_Juden_Dench
How likely is a space craft - such as the James Webb telescope or the ISS - to be hit by a meteorite or space junk and be ruined?	3166	disintegrationist