There is this strange glitch where whenever I place down a black hole it shows the habitable zone for it. I'm pretty sure that that's not supposed to be there. I made sure that habitable zones were off. To replicate this glitch, just place down the most dense black hole.
Also, a small side note, the update I just received to fix the city lights on the moon didn't work... I still saw them there. Either way, this game is AWESOME I'm having so much fun breaking it. Nice job GA!