I'm a bit busy these days but I still try to send out my explorers hoping I'll discover another planet. So far, no so much luck. I did discover one planet but my stats are nothing to brag about:
Over 250 missions for just one planet :(
Now, the fun part. For the last few days I've been under an attack by 
He managed to catch me by surprise and destroy all 5 explorers that I had on my Beta planet. Bastard.
So, what's next?
More explorations. At the moment I'm having 8 active missions that are not visible in the main window ( I have to scroll to see them) since I explored all the visible (by default) space. I'll ignore the attacks and will probably activate the shield from time to time to thwart his attempts to rob me blind.
Do you play NextColony? How's your luck?