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   br00t4c (br00t4c@mastodon.social)'s status on Friday, 16-Aug-2024 08:03:13 JST br00t4c

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

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

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     David Marshall (davidtheeviloverlord@mastodon.social)'s status on Friday, 16-Aug-2024 08:25:29 JST David Marshall

     in reply to

     @br00t4c

     Do asteroids usually wipe out comets?

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     br00t4c (br00t4c@mastodon.social)'s status on Saturday, 17-Aug-2024 00:28:15 JST br00t4c

     in reply to

     • David 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.