/r/askscience

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How do we actually know the earth is 4,5 billion years old?

4769 upvotes • therealclucknorris

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Does radioactive decay reduce an object's mass?

4768 upvotes • ds1749320

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What impact does a tsunami have on ships at sea?

4767 upvotes • Skogsmard

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Light is deflected by gravity fields. Can we fire a laser around the sun and get "hit in the back" by it?

4765 upvotes • MG2R

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Is the human body affected by the changing seasons?

4764 upvotes • maudiestirling

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What are the limits of gravitational slingshot acceleration?

4762 upvotes • the_y_of_the_tiger

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Do birds sing in certain "keys" consisting of standardized "notes"?

4762 upvotes • modernmartialartist

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Do humans actually have invisible stripes?

4760 upvotes • Severe-Criticism3927

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If I looked completely different but my scent was the still the same, would my dog still recognize me as their owner?

4749 upvotes • QuadrupleQ

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Is there a limit to expansion of the International Space Station?

4748 upvotes • [deleted]

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How do we actually know the earth is 4,5 billion years old?	4769	therealclucknorris
Does radioactive decay reduce an object's mass?	4768	ds1749320
What impact does a tsunami have on ships at sea?	4767	Skogsmard
Light is deflected by gravity fields. Can we fire a laser around the sun and get "hit in the back" by it?	4765	MG2R
Is the human body affected by the changing seasons?	4764	maudiestirling
What are the limits of gravitational slingshot acceleration?	4762	the_y_of_the_tiger
Do birds sing in certain "keys" consisting of standardized "notes"?	4762	modernmartialartist
Do humans actually have invisible stripes?	4760	Severe-Criticism3927
If I looked completely different but my scent was the still the same, would my dog still recognize me as their owner?	4749	QuadrupleQ
Is there a limit to expansion of the International Space Station?	4748	[deleted]