Solar Walk: Planet Explorer

Explore the Solar System in 3D with Solar Walk: Planet Explorer, an interactive astronomy app for students, families, and space enthusiasts. Travel from the Sun to distant planets, follow moons in orbit, inspect planetary rings, discover dwarf planets and comets, and learn about spacecraft. Move freely through a detailed solar system model or start a cinematic guided tour. INTERACTIVE 3D SOLAR SYSTEM Navigate a beautiful 3D planetarium with realistic planet textures, atmospheric effects, rings, moons, and orbital paths. Tap any celestial object to focus, zoom in, rotate the view, and explore space. REAL-TIME ORBITAL SIMULATION Watch planets and moons move through their orbits in real time. Pause the simulation, resume it, or change speed of time to observe orbital motion, fast-forward across days and years, and understand how the solar system changes. DISCOVER EVERY WORLD Open detailed information cards for planets, moons, dwarf planets, comets, and spacecraft. Learn key facts, physical characteristics, and orbital details through clear explanations. LOOK INSIDE THE PLANETS Explore inner structure cutaways that reveal the core, mantle, and crust. See how rocky planets and gas giants differ beneath their surfaces and connect visual models with astronomy knowledge. PLANET COMPARISON LAB Compare planets side by side. Examine differences in size, gravity, temperature, distance, orbital period, and other characteristics to understand what makes each world unique. SPACE MISSIONS LIBRARY Discover major missions, probes, satellites, landers, and spacecraft. Learn where they traveled, what they studied, and how they contributed to space exploration. LEARN ASTRONOMY STEP BY STEP Build your knowledge with astronomy lessons covering the solar system, planetary science, orbits, moons, comets, exploration, and more. Use the A-Z space glossary whenever you encounter an unfamiliar term. TEST YOUR SPACE KNOWLEDGE Take multi-level quizzes for different experience levels. Review astronomy topics, challenge your memory, and turn learning about planets and space into an engaging routine. STAY CONNECTED TO SPACE Check upcoming astronomical events and discover notable moments with On This Day in Space History. Explore past milestones while keeping an eye on future events. CALCULATE JOURNEYS THROUGH SPACE Use the travel time calculator to estimate how long a journey could take between destinations. Compare cosmic distances in a more understandable way. BROWSE THE UNIVERSE YOUR WAY Use the category browser to quickly explore: • Planets • Moons • Dwarf planets • Comets • Spacecraft KEY FEATURES • Interactive 3D solar system and planetarium • Real-time orbital simulation • Pause, play, and time speed controls • Realistic planet textures, atmospheres, and rings • Moon systems moving in orbit • Tap-to-focus and smooth planet zoom • Detailed celestial object information • Core, mantle, and crust cutaway views • Side-by-side planet comparison tools • Cinematic guided solar system tour • Space missions and spacecraft library • Astronomy lessons and educational content • Multi-level space quizzes • A-Z astronomy glossary • Upcoming astronomical events • On This Day in Space History • Interplanetary travel time calculator • Browsing by object category Whether you want to study astronomy, explore planets in 3D, prepare for a science lesson, or enjoy a guided journey through space, Solar Walk: Planet Explorer puts the solar system within reach. Begin your journey and explore the worlds orbiting our Sun. Explore every world at your own pace.