"In a mind-bogglingly vast universe, our solar system feels like a comparatively cozy home, perched out on one of the outer arms of the spiral Milky Way galaxy. Formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud, it is comprised of eight terrestrial and gaseous planets, several hundred dwarf planets, nearly five hundred moons, and other small bodies such as asteroid belts, comets, and dust clouds. Chock full of...