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neiltyson's profile
Neil deGrasse Tyson
Neil deGrasse Tyson
Neil deGrasse Tyson
Verified account
@neiltyson

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Neil deGrasse TysonVerified account

@neiltyson

Astrophysicist

New York City
haydenplanetarium.org/tyson/
Joined January 2009

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    Neil deGrasse Tyson‏Verified account @neiltyson 13 Mar 2014

    If our blood used Copper instead of Iron, turning it green, I wonder what color we would have made stop lights & stop signs.

    8:44 PM - 13 Mar 2014
    • 3,043 Retweets
    • 3,751 Likes
    • Doomguy4Smash5 v2 issa أروى Dr. Katie Biittner 🏳️‍🌈 asmahan Rawan M. AlBabtain Maria Narendra Naidu punt
    627 replies 3,043 retweets 3,751 likes
      1. New conversation
      2. Josh Centers‏ @jcenters 13 Mar 2014
        Replying to @neiltyson

        @neiltyson You been digging into Sagan’s old stash?

        2 replies 6 retweets 39 likes
      3. 1 more reply
      1. New conversation
      2. Darrell  🖖🏽‏ @TheTrekNerd 13 Mar 2014
        Replying to @neiltyson

        @neiltyson if our blood was green that would mean we were Vulcans and we wouldn’t need stop signs and green lights.

        6 replies 2 retweets 3 likes
      3. #EpicAna‏ @anakay831 13 Mar 2014
        Replying to @TheTrekNerd

        @TheTrekNerd I swear it was not plagiarism. We obviously just think alike. If you tell me to, I will delete my comment.

        1 reply 0 retweets 0 likes
      4. Darrell  🖖🏽‏ @TheTrekNerd 13 Mar 2014
        Replying to @anakay831

        @anakay831 More comments = more power to vulcans! :)

        0 replies 1 retweet 1 like
      5. End of conversation
      1. New conversation
      2. brian wickman‏ @wickman 13 Mar 2014
        Replying to @neiltyson

        @neiltyson what if c a t spelled "dog"?

        2 replies 1 retweet 7 likes
      3. 1 more reply
      1. New conversation
      2. Larry Garfield‏ @Crell 13 Mar 2014
        Replying to @neiltyson

        @neiltyson That has more to do with wavelengths of light, dispersion, and neurology than with hematology.

        2 replies 2 retweets 3 likes
      3. 1 more reply
      1. ZB‏ @dontgetbored 13 Mar 2014
        Replying to @neiltyson

        @neiltyson u high bro

        0 replies 2 retweets 1 like
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      1. New conversation
      2. Galen‏ @gln 13 Mar 2014
        Replying to @neiltyson

        @neiltyson ask the horseshoe crabs, they use copper instead of iron.

        3 replies 0 retweets 4 likes
      3. Cory G Watson‏ @gphat 13 Mar 2014
        Replying to @gln

        @gln @neiltyson burn

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Dan Lewis‏Verified account @DanDotLewis 13 Mar 2014
        Replying to @neiltyson

        @neiltyson The first stop sign was green -- at least, the lettering was. On a white background. http://en.wikipedia.org/wiki/Stop_sign#History …

        2 replies 1 retweet 5 likes
      3. Monody‏ @Rancore202 13 Mar 2014
        Replying to @DanDotLewis

        @DanDotLewis You made me learn a bunch of interesting stuff about stop signs! Thanks! :3

        1 reply 0 retweets 0 likes
      4. Dan Lewis‏Verified account @DanDotLewis 14 Mar 2014
        Replying to @Rancore202

        @Rancore202 that's what I do. Check out http://nowiknow.com  :)

        0 replies 0 retweets 0 likes
      5. End of conversation
      1. Jen Biddle‏ @subsurface_life 13 Mar 2014
        Replying to @neiltyson

        @neiltyson Blood with hemocyanin bound copper, ala horseshoe crab, is blue - wouldn't that be a more likely color?

        0 replies 1 retweet 1 like
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      1. New conversation
      2. Dr GeneQueenB‏ @GeneQueenB 13 Mar 2014
        Replying to @neiltyson

        @neiltyson First shot tonight. YOU got me hooked. Thank you!pic.twitter.com/akpDhSDXpA

        3 replies 0 retweets 3 likes
      3. HE66‏ @HoosierEagle66 13 Mar 2014
        Replying to @GeneQueenB

        @GeneQueenB great shot of m42. I always wanted to take astro-pics.

        1 reply 0 retweets 0 likes
      4. Dr GeneQueenB‏ @GeneQueenB 13 Mar 2014
        Replying to @HoosierEagle66

        @HoosierEagle66 Just getting started. First time with photo rig. wasn't as hard as I thought it would be.

        1 reply 0 retweets 1 like
      5. HE66‏ @HoosierEagle66 14 Mar 2014
        Replying to @GeneQueenB

        @GeneQueenB that Orion shot is awesome.

        0 replies 0 retweets 0 likes
      6. End of conversation

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