/u/Szechwan's posts in /r/askscience

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Are gravitational waves able to "double-up" in the same manner water waves can? Are there points in space that can experience huge spikes in distortion due to well-timed black hole mergers?

3091 upvotes

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Why does the light from a bright source appear to form a cross at certain exposures? Is there a reason these "rays" are at 90 degrees to one another?

207 upvotes

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How adapted would our ancestors have been to life with without clean water?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Are gravitational waves able to "double-up" in the same manner water waves can? Are there points in space that can experience huge spikes in distortion due to well-timed black hole mergers?	3091
Why does the light from a bright source appear to form a cross at certain exposures? Is there a reason these "rays" are at 90 degrees to one another?	207
How adapted would our ancestors have been to life with without clean water?	1