Many different planets are many different distances from their host star; we find ourselves at this distance because if we were closer or farther away, the temperature would be hotter or colder, eliminating liquid water, an essential ingredient for our survival.
Brian GreeneI've seen children's eyes light up when I tell them about black holes and the Big Bang.
Brian Greene...quantum mechanicsโthe physics of our worldโrequires that you hold such pedestrian complaints in abeyance.
Brian Greene