On a Saturday in September, 13-year-old José Valdes Rodriguez is in his room, using a stellar evolution and structure simulator to find the mass of a hypothetical galaxy.
“I don’t really care what others think about me,” he said of being the youngest student in his classes. “I’m just learning.” Thanjavur has now known José for several years, and recommended getting the budding academic back for more classes. “A lot of astronomy comes with lots of physics. And physics, by definition, comes with lots and lots of math,” he said. “It’s not just knowing that ‘this happens because of this,’ it’s knowing the laws, and knowing how to mathematically predict something.”