I played all day long each day, started 2 days ago to today.
Got to the space stage, but I accidentally made the <Center of the universe species(hates everyone> mad, and they are like the most powerful enemies in the game(they're the only people you are forced to kill to "beat the game"). So they started attacking my planets like crazy, every 5 minutes or so.
I then started using cheats to get $100 million(well $1 less than that) to buy tools and such.
It's still very annoying and hard to kill them.
TIP: Do not go towards the center of the galaxy until you probably have everything unlocked. Go at a steady slow pace.