Only 20 hours in a year?!
I bought this game last year too, but I already have >2000 hours on this game!
If you're the guy who just collides things together then the game won't be very interesting for long.
Try making unique, stable solar systems instead of colliding things together, then the game will be interesting for longer.
What makes making solar systems more interesting for me, is that I make some sort of backstory for the system, and If there's any habitable planets, I try to imagine what aliens might look like on those planets.