Did you know that when a jet plane breaks the sound barrier it is instantly surrounded by a sort of halo cloud? I am not sure if I am the only one that doesn’t know this. I am very into trivia and trivial things, and have never come across this fact before. The only reason I now know is because once again I was roaming around the internet in the middle of the night. Did you know they keep it open 24 hours a day, and don’t even close for Christmas? Anyway, I came across some more cool pictures. These were (shh, don’t guess, it might ruin it for everyone else). . . pictures of fighter jets breaking the sound barrier.