Jupiter is the biggest planet in the solar system, but it still has secrets The discovery of its moons changed how scientists viewed the whole solar system. With a storm that s raged for hundreds of years, and a gravitational pull that protects the whole solar system, scientists are passionately curious about the gas giant. Learn about Jupiter's discovery, what it would be like to visit the gas giant, and what scientists still want to know. Vivid photos and illustrations, scientist spotlights, and sidebars help unlock the secrets of Jupiter."