No, I meant this particular planet. If you travel aboard a ship going that fast, the time dilation would ensure it would just take a bit under a year.
For everyone else it would take longer than 558 years of course.
For everyone else it would take longer than 558 years of course.
If you were to goto Alpha Centauri and then back to Earth, you may have spent just 2 years in your rocket. But when you get out of your rocket, you will find that 8 years have gone by on Earth.
Taking a lot of liberties with my explanation, but hope this ELI5 works.