the Gott time travel conjecture

The Gott time travel conjecture, proposed by physicist J. Richard Gott, suggests that time travel to the past might be possible under specific conditions. Essentially, it revolves around the idea of closed timelike curves—paths through spacetime that loop back on themselves. If an object or observer travels along such a curve, they could theoretically arrive at an earlier point in time. Gott's conjecture indicates that if such travel were feasible, it would likely require a massive gravitational body, like a black hole, to create the necessary conditions. However, it's largely theoretical and remains unproven in practice.