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GNU social JPは日本のGNU socialサーバーです。
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  1. Embed this notice
    br00t4c (br00t4c@mastodon.social)'s status on Friday, 16-Aug-2024 08:03:13 JST br00t4c br00t4c

    An asteroid wiped out the dinosaurs, not a comet, new study finds

    https://arstechnica.com/?p=2043481

    In conversation about 10 months ago from mastodon.social permalink
    • Embed this notice
      D. G. Marshall (davidtheeviloverlord@mastodon.social)'s status on Friday, 16-Aug-2024 08:25:29 JST D. G. Marshall D. G. Marshall
      in reply to

      @br00t4c

      Do asteroids usually wipe out comets?

      In conversation about 10 months ago permalink
    • Embed this notice
      br00t4c (br00t4c@mastodon.social)'s status on Saturday, 17-Aug-2024 00:28:15 JST br00t4c br00t4c
      in reply to
      • D. G. Marshall

      @davidtheeviloverlord

      "The main difference between asteroids and comets is their composition, as in, what they are made of. Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. Both asteroids and comets were formed early in the history of the solar system about 4.5 billion years ago. Asteroids formed much closer to the Sun, where it was too warm for ices to remain solid. "

      https://coolcosmos.ipac.caltech.edu/ask/181-What-is-the-difference-between-an-asteroid-and-a-comet-#:~:text=The%20main%20difference%20between%20asteroids,about%204.5%20billion%20years%20ago.

      In conversation about 10 months ago permalink

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      1. Domain not in remote thumbnail source whitelist: coolcosmos.ipac.caltech.edu
        Ask an Astronomer
        What is the difference between an asteroid and a comet?

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GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.

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