Context of 2nd pic:Apollo 1 was a NASA test mission that ended in tragedy on January 27, 1967, when a fire broke out inside the spacecraft during a ground test. The three astronauts aboard—Gus Grissom, Ed White, and Roger Chaffee—died because the fire spread rapidly in the pure-oxygen cabin. The accident led NASA to improve spacecraft safety before continuing future Apollo missions.... #nasa #universe #astronaut #moon #space

Saturn and its 80 Moons! | How the Universe Works | Science Channel

Every type of Saturn Moon Explained in 7 minutes