The natural ageing process is one of the things that we still don't have the ability to change. Our genes are mostly responsible for these changes so we all age differently.
The causes of ageing are uncertain; there are a lot of theories but we still don't know for sure but once we do, we'll eventually become immortal.
Ard Gelinck is a Dutch graphic designer who gave us the closest thing to time travel thanks to his excellent Photoshop skills. He created a world where our favorite celebrities can pose next to their younger selves and you can clearly see the changes they all went through. Most importantly we can all agree that these celebrities have definitely aged very well.