Learn space science by exploring real missions.
Start with free, classroom-ready activities. Explore Earth orbit, weather satellites, and the science of space telescopes. No student registration or shopping required.
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Space Explorer · 3 guided missions
Take the captain’s seat.
Plan a spacecraft, manage a fictional budget, and make mission decisions from Earth orbit to the Moon and Mars. Earn mission badges while exploring real science and resource tradeoffs.
Start the exploration gameInteractive engineering lab
Can you afford your own space mission?
Design a spacecraft, select a launch, plan scientific instruments, and see how every choice changes the budget. Includes risk reserves, engineering constraints, and optional contract revenue.
Try the free mission budget simulatorStart learning
Space science lessons
Grades 6–8 · 35 minutes
Why do satellites stay in orbit?
Discover how gravity and sideways motion keep spacecraft in orbit around Earth.
Open free lesson
Grades 3–5 · 30 minutes
How do weather satellites observe storms?
Investigate how changing cloud patterns and satellite instruments help meteorologists.
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Grades 9–12 · 45 minutes
How do space telescopes see invisible light?
Compare Hubble and Webb to discover why astronomers observe beyond visible light.
Open free lessonTeacher note: These are introductory activities, not an accredited curriculum or a claim of alignment to specific educational standards. Review for your grade level and local requirements before classroom use.