If the Universe is expanding and everything separates from everything else, why do galaxies collide with each other? “Because without collision forces, there is no movement and there is no reality” Heraclitus of Ephesus (535-475) BC A century ago, in 1922, the Russian mathematician Aleksandr Fridman published an article where he presented an expanding Universe, … Read more
https://awardworld.net/nobel-prize/star-wars-or-why-galaxies-collide/
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