If an Alien offered you a one week trip across the Universe and back, the catch being 15 years passes on earth. Would you accept or reject the offer?

If an Alien offered you a one week trip across the Universe and back, the catch being 15 years passes on earth. Would you accept or reject the offer?
If an Alien offered you a one week trip across the Universe and back, the catch being 15 years passes on earth. Would you accept or reject the offer?
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