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   2of5Unimatrix01 (silentbob@social.tchncs.de)'s status on Friday, 05-Jan-2024 22:38:40 JST 2of5Unimatrix01

   in reply to

   • Dr. Victoria Grinberg

   @vicgrinberg
   And over 2000 years ago, the ancient Greeks already proved that the earth is a sphere. And today there are still/again flatearth apologists.
   One part of humanity is learning, the other wants to go back to its warm, cozy cave.
   :)

   • Embed this notice
     Dr. Victoria Grinberg (vicgrinberg@mastodon.social)'s status on Friday, 05-Jan-2024 22:38:42 JST Dr. Victoria Grinberg

     It's mind-blowing how young some of our knowledge about the Universe is 🤯

     ⭐ It's only since the seminal thesis of Cecilia Payne-Gaposchkin in 1925 that we know that stars are mainly made of hydrogen & helium:
     ▶️ https://physicsworld.com/a/cecilia-payne-gaposchkin-the-woman-who-found-hydrogen-in-the-stars/

     🌀 And it's just so less than 100 years ago since Hubble, building on Henrietta Swan Leavitt’s period-luminosity relation for Cepheids, has shown that our own Milky Way is just one galaxy among many:
     ▶️ https://mastodon.social/@mcnees/111681549432325681

     #VicisAstro #Astrodon #astronomy