Monday's Riddle! The Truth Is Out There

Hello Riddlers! Can you can guess the theme? It's far out this week  ; ) ~ F

What I am you may not know, but when I come I'll steal the show. For all this time I've been a mystery, living inside your lines of history. I may be watching and studying your groove or perhaps I'm plotting to make my next move. Whatever it is that I may be showing, the surprise of me is just in the knowing. For, I am an enigma wrapped in a pickle- something inside that forever will tickle. The further out there or deeper you go, there will always be more about me to know. I am that something that comes from a place where there's nothing to do but float off in space. 

What am I? 

I gave you a clue!




FEAR NOT THE UNEXPECTED