Celestial Simulation
Explore Real Celestial Motion
₪14.90 · Designed for iPad
A living, physics-based celestial simulation—eclipses, planetary geometry, lunar occultations, and real three-body chaos driven by time and observer location.
Celestial Simulation
Experience the universe as it truly moves.
Celestial Simulation is a high-fidelity, physics-based app that lets you explore and understand celestial motion through real simulations—not animations or guesses. Every event is driven by time, location, and real celestial mechanics.
From eclipses and planetary motion to lunar occultations and chaotic three-body dynamics, the app turns complex astronomy into intuitive, visual experiences.
Observer-Based Simulation
Your location matters. Set your observing position on Earth and watch how celestial events change with latitude, longitude, and time. Every simulation adapts instantly to your chosen place and moment.
Solar System Geometry
Explore the mechanics of the inner solar system:
- Annular and hybrid solar eclipses with umbra and antumbra geometry
- Planetary conjunctions and minimum angular separations
- Mercury and Venus elongations for optimal visibility
- Retrograde motion visualized over days and weeks
- Transits of Mercury and Venus across the solar disk
Most simulations are continuous and time-accurate.
Lunar Occultations
See how the Moon moves through the sky:
- Occultations of bright stars and planets
- Local and global visibility bands
- Geometry that explains why an event is visible from certain locations
Three-Body Dynamics
Go beyond classical orbits and explore real gravitational complexity:
- Circular Restricted Three-Body Problem (CR3BP)
- Lagrange points L1–L5 with stability insights
- Chaotic motion in non-rotating frames
- Extreme sensitivity to initial conditions
- These simulations reveal how real spaceflight dynamics and celestial chaos work.
Special Focus: Total Solar Eclipse 2026 (Europe)
A total solar eclipse will cross Europe in 2026 — a rare and unforgettable event.
Celestial Simulation lets you explore the full path of totality, simulate eclipse geometry from different locations, and understand how timing and position affect what you will see.
Use the simulation to:
- Compare observing locations across Europe
- Visualize eclipse paths and shadow motion
- Plan where and when to experience totality
Whether you are preparing a journey or simply exploring the mechanics behind the event, the app helps you understand why the eclipse unfolds the way it does.
Built for Exploration
- Interactive time control
- Clean, focused visualizations
- Designed for learners, enthusiasts, and curious minds
- No clutter, no gimmicks—just the universe in motion
Celestial Simulation is a pocket laboratory for understanding how the sky actually works.
Whether you’re learning, teaching, or simply fascinated by celestial mechanics, this app lets you see the physics behind the beauty.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
The developer, Dung Le, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Dung Le
- Size
- 91.9 MB
- Category
- Education
- Compatibility
Requires iOS 18.5 or later.
- iPhone
Requires iOS 18.5 or later. - iPad
Requires iPadOS 18.5 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.5 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 D.Le
