Do you think time travel is possible? Using a time machine to travel into the past or future seems almost impossible. However, here are two ways you can travel into the future and never come back. The first way involves space-time and the speed of light. Here's how: Imagine you're boarding a spacecraft that can travel at the speed of light, and you travel continuously in space. The faster you travel, the further you will move into the future. Another way involves the gravity of black holes. If you travel near a black hole, time will slow down for you compared to Earth. When you return to Earth, you will have traveled many years into the future.