👆Select System: Click the "Sun + Earth + Moon" preset in the left panel.
Sun + EarthA planet held in orbit by the Sun's gravity
Click any planet for cinematic view
Earth
Relative orbital motionNormal · 1×
Gravity
forceVelocityPath
📢 Important Message
Understand Before You Explore
Try the simulation only after understanding the concept clearly.
Use the simulation after completing the corresponding activity in your school laboratory.
The best way to learn: Experiment with different parameters and configurations, and observe the results.
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1. Celestial System Presets
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Try On Your OwnExplore the Gravity & Orbits simulator freely at your own pace.
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Understand FlowLearn orbital physics with hands-on guided missions.
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GRAND VICTORY! 3 STARS! 🎉
You mastered Gravitational Orbits, Velocity Vectors & Three-Body Dynamics!
SystemSun+Earth+Moon
Orbital Speed29.8 km/s
Gravity Force3.54 × 10²² N
Orbit Period365 days
⚡ Key Educational Takeaways Mastered:
• Newton's Universal Gravitation: Gravitational attraction is directly proportional to each mass ($F = \frac{G \cdot m_1 \cdot m_2}{r^2}$) and pulls continuously inward toward the barycenter.
• Inertia vs Inward Gravity: A stable orbit occurs when forward tangential velocity ($v = \sqrt{\frac{G \cdot M}{r}}$) continuously balances inward gravitational acceleration.
• Kepler's Planetary Dynamics: Increasing central star mass strengthens gravitational acceleration, resulting in higher orbital speeds and shorter orbital periods.
• Multi-Body Nested Systems: Moons and satellites remain gravitationally bound to their parent planets while simultaneously orbiting their common parent star.
