Is anything outside the solarsystem where Kerbin resides?

So, I wanted to recreate the Voyager and see how far into space I could launch a probe.

As it stands now I've gotten past the highest orbit of the outermost planet (Eelo) and when I quit the game just now the probe was about 150 billion meters (atleast I think it was meters) from the sun.

Can I get out of the solarsystem? Is there anything outside it? I can't scroll out anymore now.