Usually, ship will be destoryed when we crash on the surface of planet. (no matter how strong your shield is)
if jump just before you contact with the surface. ship will still fly for few second, that make you fly inside the planet. You still able to complete the jump and you are not dead . . . . . . . . . . . . yet
After you jump the other system. you will see your ship just explode in front of the jump gate with black smoke.
at this time you will not able use any function, not even the quit key "ESC" . the game will hang until you restart your PC[S:;P:]