probes get deleted when to far away problem....

[SkullField]

so i made a ship that drops probes but when i get a medium amount of distance away from the probe, it gets deleted. so ill drop the probe then switch to the probe until it lands but then the ship gets deleted when it gets to far away. ive played kerbals for a while now and cant seem to figure the problem out. the probes have an ai core so its not counted as debris so i can actually use the sci gadgets. i dont get it. you cant get to far away from the probes without them being deleted. it seems to only happen while im on kerbin.(i havnt tried any where else.) any ideas or is it just part of the game....

[biohazard15]

Just part of the game. Anything that gets beyond physics draw distance (2.5km) while flying sufficiently low in atmosphere, gets deleted.

[SkullField]

aww, ok thanks, i just wanted to know if it was my settings or just part of the game. thanks for the reply.