A hands-on astronomy guide
Explore the Solar System in Interactive 3D
Vastonaut is a browser-based 3D Solar System explorer designed to make nearby worlds easier to see, compare, and talk about. Move from the Sun to planets and selected moons, open object information, and follow a guided Earth-to-Moon mission—all without installing a separate application.
What can you explore?
The interactive scene includes the Sun, the eight planets, and selected smaller worlds and moons. Use the destination controls to move directly to a body, or explore freely by rotating the view and zooming in. The available destinations include Earth's Moon, Ceres, Pluto and Charon, and several moons orbiting the giant planets, such as Io, Europa, Ganymede, Callisto, Titan, Enceladus, Miranda, and Triton.
Planets from Mercury to Neptune
Compare the rocky inner planets with the giant worlds of the outer Solar System. Select a destination to open its information panel and explore its place in the system.
Moons and smaller worlds
Visit selected moons and dwarf planets to start conversations about different surfaces, rings, orbital companions, and the variety of objects around our Sun.
Guided space missions
Follow the Earth-to-Moon journey chapter by chapter. It combines camera movement, short explanations, distance readouts, and optional spoken narration.
Shared-screen exploration
Project the scene for a group, use projector mode to simplify the display, and optionally pair a phone as a remote controller for a presenter or family guide.
How to use the interactive 3D Solar System
- Start exploring. Open the experience in a modern browser with JavaScript and WebGL enabled.
- Choose a world. Select a destination label or navigate with touch gestures, a mouse, or camera controls.
- Read the facts. Open the object information panel to learn basic details about the selected body.
- Follow a guided mission. Open Guided Missions, start Earth to Moon, and use the chapter controls to pause or move backward and forward. On a phone, collapse the mission details when you want more of the 3D scene visible.
- Present to a group. Use Projector Mode and, when useful, pair a phone controller with the shared display.
Why are the planets and distances compressed?
Space is vast. A single view that used real-world sizes and distances would make the planets extremely small and far apart, while zooming closely enough to inspect a planet would hide the rest of the system. Vastonaut therefore uses a compressed visual model to make navigation and comparison practical. Orbital motion is time-compressed too.
The scene is an educational visualization, not a scale-accurate map for measuring real distances or a live ephemeris. Use NASA's published planetary data when exact dimensions, positions, or mission-grade values matter.
The Earth–Moon distance in context
The Moon is on average about 384,400 kilometres (238,855 miles) from Earth. At that distance, light takes roughly 1.3 seconds to travel between the Moon and Earth. The number gives a concrete way to discuss how a world can look close in the sky while remaining far away in space.
For reference, see NASA's Moon facts and average-distance information. For planet order, categories, and official basic descriptions, use NASA's guide to the planets.
A Solar System activity for families and classrooms
Vastonaut is built around guided exploration rather than a long block of text. Families can pick a planet and ask what makes it different. Teachers and presenters can use the shared screen to introduce a topic, then move between destinations as questions arise. The guided mission gives a group a common sequence to discuss, while free exploration lets curious learners follow their own questions.
For a useful classroom discussion, ask learners to predict which world comes next from the Sun, compare a rocky planet with a giant planet, or explain why the model compresses distances. Check factual claims against astronomy references such as NASA's Solar System facts.
Frequently asked questions
Is Vastonaut an online 3D Solar System model?
Yes. It is an interactive, browser-based 3D scene for exploring the Sun, planets, and selected moons. It also includes object information and a guided Earth-to-Moon mission.
Can I use it on a phone?
Yes. The interface supports touch navigation on compatible mobile browsers. The mission panel can be collapsed to leave more of the 3D view visible.
Are the planet sizes and distances shown to scale?
No. Sizes, distances, and orbital timing are compressed for navigation and visualization. The scene should not be used to measure exact distances or positions.
Does it require an installation?
No separate application installation is required. Open it in a modern browser with JavaScript and WebGL support.
Is this a replacement for NASA data?
No. Vastonaut is for interactive exploration and discussion. Consult authoritative astronomy sources for current mission data, precise measurements, and scientific research.
Continue exploring
Ready to move from reading to exploring? Open Vastonaut's interactive 3D Solar System, choose a destination, and follow a guided mission to look at our cosmic neighbourhood from a new perspective.
Last reviewed: October 9, 2026.