Explore Science Online

Take a spin around the Universe and dive into the latest space science discoveries. Join us in exploring online space science content.

Solar System
The Solar System is our neighborhood in space. At its center is the Sun, our local star and the largest object in the system. Eight planets, three dwarf planets, 169 known moons, millions of rocky asteroids and icy comets, dust and gas travel around the Sun. Image at right: Our Solar System (courtesy of NASA).
Learn more on the Solar System page

Out There
Beyond the interstellar boundary of our Solar System, there's a universe full of exciting discovery. Journey into deep space to learn more about what we know — and the mysteries that remain! Image at right: Inside the Coma Cluster of Galaxies (courtesy of NASA).
Learn more on the Out There page

Missions
Space exploration has taken on many forms since its beginnings not so long ago. Past missions have built a strong foundation for the missions of today, and for the future missions on the horizon. Across the world people have competed and cooperated to travel from Earth to worlds beyond using robots and manned spacecraft. Image at right: Astronaut Bruce McCandless on a spacewalk using the manned maneuvering unit (MMU) on STS-41B, February 1984, (courtesy of NASA).
Learn more on the Missions page

Around the Adler

Our Doane Observatory is open every Third Thursday for Adler After Dark.

Did you know?: Over its flight career, space shuttle Endeavour flew 122853151 miles and spent 299 days in space.

Get involved

Observe the skies with your very own telescope.