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I once met him.
Quote from: Uncle Mort on July 29, 2022, 08:00:14 AMI once met him.
'Cartwheel' galaxy https://news.sky.com/story/new-image-from-nasas-james-webb-space-telescope-reveals-details-of-the-cartwheel-galaxy-12664652
Quote from: Steve on August 03, 2022, 10:35:13 AM'Cartwheel' galaxy https://news.sky.com/story/new-image-from-nasas-james-webb-space-telescope-reveals-details-of-the-cartwheel-galaxy-12664652Cor!
Cartwheel Galaxy Explained
Quote from: Uncle Mort on August 03, 2022, 05:48:22 PMCartwheel Galaxy Explained But if the universe is constantly expanding how come two galaxies can collide?
Quote from: Steve on August 03, 2022, 08:26:55 PMQuote from: Uncle Mort on August 03, 2022, 05:48:22 PMCartwheel Galaxy Explained But if the universe is constantly expanding how come two galaxies can collide?Gravitation attraction within 'local' groups of galaxies can overcome the general expansion. Our galaxy has had a number of collisions already; the Andromeda galaxy will collide with us in about 4.5 billion years.