The Solar System. Our solar neighborhood is an exciting place.
The Solar System is full of planets, moons, asteroids, comets, minor planets, and many other exciting objects. Learn about Io, the explosive moon that orbits the planet Jupiter, or explore the gigantic canyons and deserts on Mars. Astronomy For Kids. Scale of Universe - Interactive Scale of the Universe Tool. Your Age on Other Worlds.
Want to melt those years away?
Travel to an outer planet! <div class="js-required"><hr> This Page requires a Javascript capable browser <hr></div> Fill in your birthdate below in the space indicated. (Note you must enter the year as a 4-digit number!) Click on the "Calculate" button. The Size Of Our World. Interactive 3D model of Solar System Planets and Night Sky.