Never underestimate the power of time warp! Pray to your god - KRAKEN or you and your EVA suit will be horribly spaghettified and you body will turn into strange anomalies floating everywhere!
You managed to accidentally hit another object in orbit? You really must be playing too much!
Scott Manley, a fairly famous KSP youtuber, made a video on it, and even intentionally trying to do it, it took a while.
As for me... It's a great game, but for some reason I haven't bothered playing lately.
What? :,v
Just imagine how big is space around Kerbin, how fast your ships are moving and how big they are in comprasion to space... It seems like impossible thing... I can't believe. Just look at numbers...
Imagine this situation:
You back to Kerbin. Your great mission to EVE is almost finished. You have the best Kerbals in your crew. You will get bilions of money after all. Tons of science in your capsule. You're going to enter the atmosphere. Only few minutes left. Nothing bad can happen. And then... BOOM! YOU'VE JUST CRASHED THOSE ONE NASTY SPACESHIP ON LOW ORBIT. This was almost impossible. One in a bilion chance... But you crashed the only vessel in the endless space! You mission is ruined... This game never stops suprizing me...
Yes, KSP star system can't exist in real life. Kerbin probably wouldn't form a black hole. You can calculate it by using this formula:
R.schw = (G*M*2)/c^2 this is Schwarzschild's radius.
Also, Kerbin, Eve, Duna, Moho are smaller than moon.
Jool has similar size to Earth, so it can't be a gas planet
Kerbol is also too small to be a star like in game.
Kerbol has similar size to Jupiter, so it can't be a star like Sun.
PS. Someone made a video where he's trying to build Kerbol System using Universe Sandbox^2.