WORLDWALKKepler-20 d
Kepler-20 d is a hot water-rich world orbiting a Sun-like star 921.6 ly away. Its star system has 2 stars. A year there lasts 77.6 days. It was found using the transit method: it dims its star as it passes in front. Planets this size may be wrapped in thick gas; the game imagines it as a solid or water world you can walk on.
What it would be like in Worldwalk imagined
Nobody has seen the surface of Kepler-20 d. The game builds it from the real numbers above: you land on hot, steamy shores of a water world.
- Air: H₂O (water vapor) steam, N₂ (nitrogen) · a guess. Surface pressure: 5.2 bar.
- A 70 kg explorer would feel like 138 kg.
- A jump that clears 50 cm on Earth would reach about 25 cm.
- Every step is hard work: your legs carry far more than your body weight.
- The air is about 5 times denser than at sea level on Earth: thick enough to slow a falling rock.
Pack the right suit. Choose 3 of 6 modules (cooling, heating, pressure hull, extra oxygen, radiation shield, jetpack), complete 3 surveys and get back to the lander before your oxygen runs out.
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Sizes, masses, temperatures and orbits come from the NASA Exoplanet Archive (Planetary Systems Composite table). Values marked estimated are calculated from the other measurements; the surface and air are imagined for the game.