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How to explore Habitable Zone 3D Explorer

Open the Habitable Zone 3D Explorer, pick Sun M dwarf or TRAPPIST-1-class, and watch the green habitable-zone band rescale as sqrt(L).

  1. Open https://freetoolonline.com/space-3d/habitable-zone.html and wait for the star plus green HZ annulus to paint.
  2. Leave Sun (L=1) selected - read conservative HZ 0.95-1.37 AU and Earth at 1 AU in the facts panel.
  3. Click Venus (~0.72 AU) or Mars (~1.52 AU) to see inside vs near-outer-edge status.
  4. Switch to M dwarf (L=0.1) - HZ moves to ~0.30-0.43 AU; TRAPPIST-1-class shows ~0.022-0.032 AU.
  5. Press Pause orbits to freeze markers, then HZ table for all three presets at once.

Next: the when guide or vs alternatives. Open the Habitable Zone 3D Explorer.

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