Astronomy Lessons & Space Science Resources
Help students explore the solar system, stars, galaxies, and the universe with Astronomy lessons, activities, and arcade-style review games.
Earth–Sun–Moon System
Seasons, moon phases, eclipses, and tides.
Solar System & Planets
Planets, moons, asteroids, comets, and the formation of the solar system.
Stars & Constellations
Properties of stars, constellations, and the life cycle of stars.
Galaxies & The Universe
Types of galaxies, the Milky Way, and the large-scale structure of the universe.
Telescopes & Space Observation
How telescopes work and how scientists study space.
Space Exploration & Missions
Space race, satellites, probes, rovers, and crewed missions beyond Earth.