Putting all practical implications aside, I was thinking about the idea of another planet that travels around the sun faster than Earth. I know that some planets do, but lets say that some day in the future we were able to create another planet, called Earth 2, that traveled around the Sun at a speed near the speed of light. Let's also say that somehow it was fairly easy and quick to move between Earth and Earth 2. So in this scenario, could someone from Earth 2 travel to Earth, spend a few years, and then go back to Earth 2 to find that only a few weeks had passed? The implications of this are amusing and interesting to think about and I was wondering if it is either wrong, correct, or simply possible or probable.