Time travel to the past is not currently possible with known physics or technology
Time travel to the future is possible in a limited sense through time dilation
Travel at speeds close to the speed of light to experience less time than others
Stay near extremely strong gravitational fields to slow your time relative to distant observers
Use precise atomic clocks to measure time dilation effects
For practical future time travel, rely on relativistic space travel concepts
For fictional or speculative time travel, consider wormholes, closed timelike curves, or exotic matter
No verified method exists to send information or people to the past
Consult modern physics, especially relativity, for the only scientifically supported approaches