A Field Guide to the Planets

Humanity’s first steps on the Moon were an immense accomplishment in 1969 and a fantastic milestone in the history of space exploration. And yet, how little we knew about our solar system as compared to what we know now! Since those famous steps were taken, we’ve discovered what is approaching 200 additional moons of all shapes, sizes, and compositions. We’ve sent spaceships and robotic laboratories to photograph and study each of the planets, dozens of moons, and even the Sun. We’ve discovered ring systems around three additional planets; landed robotic explorers on Mars, on asteroids, and even on comets. We’ve also found thousands of exoplanets around other stars, with implications for our own origins. There has never been a more exciting time than today to explore and understand our solar system and beyond with A Field Guide to the Planets.