The term "Gödel universe" typically refers to a solution in Einstein's field equations of general relativity proposed by the logician Kurt Gödel in 1949. In this solution, Gödel showed that it's theoretically possible to have a rotating universe where time loops back on itself, allowing for closed time-like curves. This concept has implications for time travel and causality within the framework of general relativity.

Gödel's universe is a fascinating theoretical construct, suggesting that time travel might be permissible under certain conditions allowed by the laws of physics, as described by Einstein's theory of general relativity. However, it's important to note that the Gödel universe is purely theoretical and has not been observed or proven to exist in reality. It's more of a mathematical curiosity that has sparked much discussion and debate among physicists and cosmologists.
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