More and more explorations are being sent out by me and all the active players around me. As players are getting more planets and resources they are upgrading their mission controls, which means they are able to send out more explorer ships at a time. This is becoming very evident as the universe's unexplored area is vanishing very quickly now. As I look around my 2 planets, I have to fly further and further to explore the emptiness of space. I still have not had any more luck finding another planet so slowly I continue my upgrades and keep flying forward. Hopefully I will find another planet before the entire universe is nothing more than darkness all around me.
Good luck explorers! :)