The answer is based on available theories, which is possible to travel in the future. Technically, we are already traveling in time at the rate of 1 hour per hour. The real question is whether it is possible to travel faster or slower than this rate. And this has already been done. Russian cosmonaut Sergei Krikalev traveled in time for his own future for 0.02 seconds. It spent 803 days, 9 hours, 39 minutes, orbiting our planet. Traveling at 17,500 miles per hour, he experienced an effect called time dilation. Einstein's theory of special relativity says that when the speed of travel relative to other objects is close to the speed of light, time passes more slowly than other people left behind. It is the reason the GPS satellites watch does not agree with the clock on Earth by 7 millionths of a second daily. Another Einstein theory called General Relativity says that time passes more slowly to object in gravitational field than to object far from such field. Source on here
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