WORLDWALKHN Lib b
HN Lib b is a temperate water-rich world orbiting a red dwarf star 20.4 ly away. A year there lasts 36.1 days. It was found using the radial velocity method: it makes its star wobble. Its temperature could allow liquid water, which makes it a habitable-zone candidate, not a confirmed habitable world. Planets this size may be wrapped in thick gas; the game imagines it as a solid or water world you can walk on. Note: its size is estimated from its mass, only a minimum mass is known. It sits where a planet could be warm enough for liquid water, in the so-called habitable zone.
What it would be like in Worldwalk imagined
Nobody has seen the surface of HN Lib b. The game builds it from the real numbers above: you land on a deep global ocean with rocky islands.
- Air: N₂ (nitrogen), H₂O (water vapor) · a guess. Surface pressure: 9.7 bar.
- A 70 kg explorer would feel like 79 kg.
- A jump that clears 50 cm on Earth would reach about 44 cm.
- The air is about 10 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.
Play HN Lib bSimilar worlds nearby
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.