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kchangnyt's profile
Kenneth Chang
Kenneth Chang
Kenneth Chang
@kchangnyt

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Kenneth Chang

@kchangnyt

Science reporter at the New York Times. Pluto, dinosaurs, NASA, viral math & more...

New York, NY
nytimes.com/by/kenneth-cha…
Joined April 2014

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    1. Kenneth Chang‏ @kchangnyt 10 Sep 2015
      Replying to @tcn33

      @tcn33 It’s not a planet unless Ceres, Haumea, Makemake, Eris, 2207OR10, Quaoar, Sedna, Orcus, 2002MS4 & Salacia are, too. +prob many more.

      2 replies 2 retweets 3 likes
    2. Alan Stern‏ @AlanStern 20 Sep 2015
      Replying to @kchangnyt

      @kchangnyt @plutosgems And they are planets too. Better get used to lots of small planets. Just like small stars.

      2 replies 2 retweets 13 likes
    3. Kenneth Chang‏ @kchangnyt 20 Sep 2015
      Replying to @AlanStern

      @AlanStern @plutosgems Don't think most people ready to hear, "We have no idea how many planets. We'll never find them all."

      5 replies 0 retweets 1 like
    4. David Grinspoon‏Verified account @DrFunkySpoon 21 Sep 2015
      Replying to @kchangnyt

      @kchangnyt @AlanStern @plutosgems well, THAT statement is true when you consider exoplanets, which the IAU definition glaringly ignores.

      2 replies 1 retweet 0 likes
    5. Kenneth Chang‏ @kchangnyt 21 Sep 2015
      Replying to @DrFunkySpoon

      @DrFunkySpoon Well, yeah, Twitter is not the medium for precisely caveated statements. Who has proposed a good definition of planet?

      1 reply 0 retweets 1 like
    6. Michele Bannister‏ @astrokiwi 21 Sep 2015
      Replying to @kchangnyt

      @kchangnyt @DrFunkySpoon http://arxiv.org/abs/1507.06300  ?

      2 replies 0 retweets 0 likes
    7. David Grinspoon‏Verified account @DrFunkySpoon 21 Sep 2015
      Replying to @astrokiwi

      @astrokiwi @kchangnyt Here's one stab at it that I made: http://funkyscience.net/wp-content/uploads/2013/07/PlanetDef_Aug.pdf …

      1 reply 0 retweets 0 likes
    8. Kenneth Chang‏ @kchangnyt 21 Sep 2015
      Replying to @DrFunkySpoon

      @DrFunkySpoon @astrokiwi No way to prove roundness of exoplanets, right?

      1 reply 0 retweets 0 likes
    9. David Grinspoon‏Verified account @DrFunkySpoon 21 Sep 2015
      Replying to @kchangnyt

      @kchangnyt @astrokiwi In general not observationally. But know mass & density. Above a certain size, physics kicks in.

      1 reply 0 retweets 0 likes
    10. Kenneth Chang‏ @kchangnyt 21 Sep 2015
      Replying to @DrFunkySpoon

      @DrFunkySpoon @astrokiwi Then it’s a fuzzy, arbitrary mass cutoff. Something slightly smaller still roundish (e.g. Vesta).

      1 reply 0 retweets 0 likes
      Kenneth Chang‏ @kchangnyt 21 Sep 2015

      @DrFunkySpoon @astrokiwi Composition also influences whether it can become round.

      1:08 PM - 21 Sep 2015
      1 reply 0 retweets 0 likes
        1. New conversation
        1. David Grinspoon‏Verified account @DrFunkySpoon 21 Sep 2015
          Replying to @kchangnyt

          @kchangnyt @astrokiwi True but we often have constraints on density. What we will never know is small body population in vicinity of exos.

          1 reply 0 retweets 0 likes
        2. Kenneth Chang‏ @kchangnyt 21 Sep 2015
          Replying to @DrFunkySpoon

          @DrFunkySpoon @astrokiwi Any exoplanets that might not clear neighborhood? Is this semantics? Can’t detect exo-Pluto or eco-Ceres, right?

          2 replies 0 retweets 0 likes
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