For some reason, whenever i look at something huge, like, close-up, i get scared that'll fall on me or something and i just wanna run away, like once, i was really close to the cn tower and there were butterflies in my stomach and it made me feel like it was gonna fall on me any second..
is that normal? o.o
is that normal? o.o

same with that video on youtube that compares all the planets in size and it keeps ascending to bigger planets, she freaks out that there's planets bigger than Earth when it's pretty huge already.
So yeah, somewhat normal/somewhat strange. :)
Age, and, maybe, experience has taught me that, although I can't change how insignificant I feel when compared with the vastness of stuff, it makes no difference whatsoever if I worry about it, so I don't anymore.
It's one of those things (there are many), which would bother us a lot if we let it, so we have to learn NOT to let it bother us.
Like, will a bee sting me and will I die from it? Will a plane crash while I'm in it?
Look at the thought from an outside point of view when it comes again (if you get my meaning), and you will see how it is easy to dwell on it and react to it, just as it is easy to dismiss it.
Trust me, you aren't gonna die just cos some stuff is big.
I haven't so far.
And I'm older than you.