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PBS Space Time
Will the Universe Expand Forever?
Throughout history, there has been much speculation about what the fate of the universe would be. Many theorized that the universe would eventually succumb to the pull of gravity, and reverse its expansion in what was being called ‘The Big Crunch.’ However, with the help of mathematical equations from Newton, Einstein, and Alexander Friedmann, we now have an answer.
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This is what happens if microscopic primordial black holes could actually hit Earth.
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Black holes of string theory - fuzzballs - are perhaps even weirder than the regular type.
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We learn more about Modified Newtonian Dynamics aka MOND.
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ACTION is the concept in physics that may be more fundamental than energy and entropy.
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Constructor Theory is the ability to see the deepest underlying facts about the world.
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The idea of magnetic monopoles remains one of physics’ most tantalizing maybes.
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