It's refreshing to see some knowledge on offtopic personally I love everything space related and I'm pretty well educated for being in 10th grade. My question is if you could travel back or forward in time to any space related event ( with 100% certainty that it happens) what would it be? And second question is how many school busses would it take to go from one side of andromeda to the other?(I calculated this in a research paper last year if u can't get it I'll tell u) [spoiler]my answer: the merging of andromeda and the Milky Way it would be freaking beautiful [/spoiler]