Galaxies on Instagram: "The black hole in Interstellar — Gargantua — is famous because it wasn’t just a CGI guess. The filmmakers actually built it from real physics. Christopher Nolan brought in Nobel-winning physicist Kip Thorne to make sure the visuals were grounded in general relativity. The VFX team at Double Negative fed Einstein’s equations into a custom rendering engine so the computer would simulate how light actually bends around a spinning black hole. Instead of drawing a ring, they m