I must be the only chucklehead out here that can't figure out how to colonize a planet! I sent my colony ship to Earth which is suppose to have 3 habitable planets. When it gets in the square next to earth, I try to click on the ship and right click on Earth. I've tried double clicking, quadruple clicking, nothing am I doing brings me to any pop up box to colonize the planet. Please tell me what I am missing? Thanks!