posted by Alex .
Have you ever wondered what to do with your unused pet while on vacation? Do you feel bad about just dumping it in some airport pet kennel and showing up again four weeks later? Do you ever wonder how to keep your pet fresh longer instead of having it age uselessly? This is where Pet-O-Tel comes in, the new and convenient way of how to temporarily get rid of your beloved companion without it even knowing that you were gone for long: shoot it into space! Our modern mostly safe rockets will transport your pet around the galaxy at 0.9998c while you go skiing in the alpine mountains or golfing in St. Andrews. You are gone for four weeks, but for your pet, you are only gone for ... how long? Hint: you better ignore acceleration, even though it in fact is what makes this scenario asymmetric.
I don't know where to start. I plugged it in the lorentz factor and got 50.1 but it was wrong.