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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. Dr. Kirby Runyon‏ @nasaman58 24 Aug 2019

      The IAU screwed up their planet definition 13 years ago today, but we've learned that dwarf planets like Pluto are full-fledged planets, &, numbering over 120, the most common type of planet, ahead of giants & terrestrials. @AlanStern @DrPhiltill @carolynporco @plutokiller

      13 replies 29 retweets 106 likes
    2. Kenneth Chang‏ @kchangnyt 24 Aug 2019
      Replying to @nasaman58 @AlanStern and

      Is the moon a planet? If yes, you have a self-consistent argument that “planet” just means “round thing.” If no, you agree that the dynamics of the orbit are part of the definition.

      3 replies 2 retweets 4 likes
    3. Dr. Phil Metzger‏ @DrPhiltill 24 Aug 2019
      Replying to @kchangnyt @nasaman58 and

      Dr. Phil Metzger Retweeted Dr. Phil Metzger

      Yes, coincidentally I just tweeted about that recently, here:https://twitter.com/drphiltill/status/1164974752215252995?s=21 …

      Dr. Phil Metzger added,

      Dr. Phil Metzger @DrPhiltill
      I'm reading old sources to understand how & why moons have (always) been classed as a type of planet, how culture forgot this, and how culture intruded in science. Here's an interesting text on the types of planets from an 1897 textbook (Advanced Physiography by John Thornton.) pic.twitter.com/VJjZ5XdDhi
      Show this thread
      2 replies 4 retweets 14 likes
    4. Dr. Phil Metzger‏ @DrPhiltill 24 Aug 2019
      Replying to @DrPhiltill @kchangnyt and

      I’ve been exhaustively reading the scientific literature about this from Galileo until now. Large moons have always considered planets. In the 1800s the two small moons of Mars were found & astronomer R. Proctor argued they aren’t true secondary planets becoz they’re too small.

      1 reply 2 retweets 6 likes
    5. Dr. Phil Metzger‏ @DrPhiltill 24 Aug 2019
      Replying to @DrPhiltill @kchangnyt and

      In the most recent century there’s been a trend in culture to forget that moons are planets, too. Even many astronomers (esp those who study dynamics instead of planetary geology) forgot this fact. But it is widespread & useful for planetary scientists to class moons as planets.

      4 replies 5 retweets 15 likes
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      Kenneth Chang‏ @kchangnyt 24 Aug 2019
      Replying to @Obs4Schools2 @obs4schools and

      Can we argue about more substantive questions like: Why is Europe a separate continent when it is clearly a glued-on continuation of the land mass of Asia? And why isn’t Greenland a continent?

      9:35 AM - 24 Aug 2019
      • 3 Likes
      • Ken Anyadike Rory Parle GoneToPlaid
      2 replies 0 retweets 3 likes
        1. New conversation
        1. Aaron Viviano‏ @AaronViviano 24 Aug 2019
          Replying to @kchangnyt

          It probably should be one continent. I wonder what one would call it? Should Europe and Asia be considered subcontinent’s like India?

          1 reply 0 retweets 0 likes
        2. Simon Manning‏ @_Simon_K 24 Aug 2019
          Replying to @AaronViviano @kchangnyt

          Clearly Asia is a continent and Europe a peninsula. Anyone can see that. The Arabian peninsula is bigger. Scandinavia too. And if Australia and Antarctica are then so is Greenland.

          0 replies 0 retweets 0 likes
          3. End of conversation
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