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How to Explore the Proxima Centauri System 3D Explorer
Open the Proxima Centauri System 3D Explorer, watch the Sun's nearest star and its 3 known/candidate planets orbit at their real relative speeds, and use the habitable-zone toggle and flare button to see why this system's habitability story is more complicated than "closest star, has a planet".
- Open https://freetoolonline.com/space-3d/proxima-centauri-system.html and wait for the red-orange star, its 3 orbiting planets, and the green habitable-zone ring to render.
- Press "Pause" to stop the orbital motion, or press it again to resume.
- Drag the speed slider (0.2x to 3x) to slow down or speed up how fast the planets orbit.
- Click "Habitable zone: on" to toggle the translucent green band marking the conservative habitable-zone estimate (0.042-0.082 AU).
- Click "Trigger a flare" to play a roughly 1.6-second stellar-flare pulse that brightens the star and sends an expanding ring out across the whole system.
- Read the facts panel table for each planet's real distance, orbital period, and mass.
Key published figures
| Figure | Value |
|---|---|
| Distance from the Sun | 4.2465 light-years |
| Proxima b | 0.04848 AU, 11.2-day orbit, >=1.06 Earth masses, discovered 2016, inside the habitable zone |
| Proxima d | 0.02881 AU, 5.12-day orbit, ~0.26 Earth masses, discovered 2022, too close/hot |
| Proxima c | 1.489 AU, ~1928-day (~5.28-year) orbit, ~7 Earth masses, unconfirmed candidate, too cold |
Next: the when guide or vs alternatives. Open the Proxima Centauri System 3D Explorer.
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