Explore the comets, meteors, asteroids, sun, planets, and moons that make up the solar system. Learn about the history of space exploration and discovery, along with the tools of astronomy that have made it possible to study celestial objects even outside our own solar system.

Solar system map -- Timeline -- Introduction -- The Big Bang and the birth of stars -- Meet the planets -- Earth's moon -- Beyond planets and stars -- From ancient astronomy to telescopes -- Sending spacecraft to space -- Future space exploration.