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5min chapter
AMA | September 2022
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
Is This a Good Answer to General Relativity?
In general relativity, gravity is the force that pulls objects together rather than pushing them apart. The theory has been used to explain why galaxies and people fall into each other in a gravitational field. But Betan Betan says there are some problems with this explanation of how things move on geodesics. He thinks it's wrong because dark energy does not dilute away as the universe expands.
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