@neiltyson You been digging into Sagan’s old stash?
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@neiltyson if our blood was green that would mean we were Vulcans and we wouldn’t need stop signs and green lights. -
@TheTrekNerd I swear it was not plagiarism. We obviously just think alike. If you tell me to, I will delete my comment. -
@anakay831 More comments = more power to vulcans! :)
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@neiltyson what if c a t spelled "dog"? - 1 more reply
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@neiltyson That has more to do with wavelengths of light, dispersion, and neurology than with hematology. - 1 more reply
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@neiltyson u high broThanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson ask the horseshoe crabs, they use copper instead of iron. - End of conversation
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@neiltyson The first stop sign was green -- at least, the lettering was. On a white background. http://en.wikipedia.org/wiki/Stop_sign#History … -
@DanDotLewis You made me learn a bunch of interesting stuff about stop signs! Thanks! :3 -
@Rancore202 that's what I do. Check out http://nowiknow.com :)
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@neiltyson Blood with hemocyanin bound copper, ala horseshoe crab, is blue - wouldn't that be a more likely color?Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson First shot tonight. YOU got me hooked. Thank you!pic.twitter.com/akpDhSDXpA
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@GeneQueenB great shot of m42. I always wanted to take astro-pics. -
@HoosierEagle66 Just getting started. First time with photo rig. wasn't as hard as I thought it would be. -
@GeneQueenB that Orion shot is awesome.
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