"Now I'll become the youngest astronaut ever because I'm 18 years old"
No, you'll become the youngest astronaut ever because your dad is a multimillionaire willing to spend millions on a brief joyride for his spoilt son.
It'll be the best 3 minutes of your life, until you get to university and find an attractive someone who's impressed with your "I've been to space" brags.
Biting the hand that feeds IT
