Venus
My grandfather was an astronomer, but not by profession, since he never had the chance to go to a university to study astronomy before he went to war. His passion, however, was barely amateur; and as a result, sometime along the course of his amateur career, probably before I was even born, he became some sort of professional without qualifications. I still remember him going to conferences with local astronomers to discuss matters such as space travel, colonization of other planets, and future space studies to find out more about our vast universe.