Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
neiltyson's profile
Neil deGrasse Tyson
Neil deGrasse Tyson
Neil deGrasse Tyson
Verified account
@neiltyson

Tweets

Neil deGrasse TysonVerified account

@neiltyson

Astrophysicist

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

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    Neil deGrasse Tyson‏Verified account @neiltyson 14 Jul 2012

    .@SAL_CD You ask about Time Travel? My colleague at Princeton, Prof. @JRichardGott wrote the book on it. http://amzn.to/Mtgnw7 

    7:05 AM - 14 Jul 2012
    • 75 Retweets
    • 122 Likes
    • Brent Wadley Dylan Weaver bp ✾꒡ .̮ ꒡✾ Josh Campbell scaremy Barnabas CoLLiོns 🦇 Tiago Alves khalid Nelson De La Nuez
    45 replies 75 retweets 122 likes
      1. Meghan M Flannery‏ @MeghanRMurphy 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @sal_cd @jrichardgott what do we want? Time travel! When do we want it? That's irrelevant!

        0 replies 1 retweet 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. John Umana‏ @JohnUmana 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @SAL_CD @JRichardGott Meaningful time travel is possible.

        0 replies 1 retweet 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Phil That Probably Isn’t On Your “Team”‏Verified account @philthatremains 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @SAL_CD @JRichardGott But can time travel occur in objects with mass? Or only photons and sub atomic particles?

        0 replies 0 retweets 1 like
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. K Mack‏ @kmack718 21 Jul 2012
        Replying to @neiltyson

        @neiltyson re: Time travel, would "time" not be relative to the planet on which one observes it?

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Wicky Fizzlestick II‏ @WickyFiz 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @SAL_CD @JRichardGott It works, here's the evidence. ;-)pic.twitter.com/XKMiX6eX

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. JD‏ @OurBellaLife 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @JRichardGott if this book was available in Kindle format, I'd have just bought it. Saves trees, easier to carry/read. consider?

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Jeff Froustet‏ @jfroustet 14 Jul 2012
        Replying to @neiltyson

        @neiltyson Saw your tweet and impulse bought it

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. David Hausmann‏ @sonofsandwich 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @sal_cd @jrichardgott - might have to pick that up to win more arguments about Lost

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Johan Wendin‏ @johanwendin 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @JRichardGott wouldn't E=mc² break down if we could somehow bend the higgs field?

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Erik Meyers‏ @ErikIsAwful 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @SAL_CD @JRichardGott if time travel was possible wouldn't we already know since all of eternity is exposed to when invented?

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. IDLERACER‏ @IDLERACER 14 Jul 2012
        Replying to @neiltyson

        @neiltyson We know for certain that time travel into the past will never be possible. Somebody from the future would have visited us by now.

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Linda Jane Ryktarsyk‏ @LinnRyktarsyk 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @SAL_CD @JRichardGott Found that book in a library years ago. He made me feel SO smart!!

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Allyoucaneat‏ @Allyoucan3at 14 Jul 2012
        Replying to @neiltyson

        @neiltyson @SAL_CD @JRichardGott Of course he knows how to time-travel he's god after all (Gott = God in German)

        1 reply 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo
      1. Aaron Carr‏ @AaronCarr1973 14 Jul 2012
        Replying to @neiltyson

        @neiltyson without a catastrophe, do you think we will ever be able to see beyond the petty BS and travel beyond our our neighbor planets?

        0 replies 0 retweets 0 likes
        Thanks. Twitter will use this to make your timeline better. Undo
        Undo

    Loading seems to be taking a while.

    Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

      Promoted Tweet

      false

      • © 2018 Twitter
      • About
      • Help Center
      • Terms
      • Privacy policy
      • Cookies
      • Ads info