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G 9-40 b

G 9-40 b is a hot water-rich world orbiting a red dwarf star 91.1 ly away. A year there lasts 5.8 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.

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EarthG 9-40 b
Gravity10.87 m/s²1.11× Earth measured
Size1.9× Earthradius measured
Mass4× Earthmeasured
Temperature≈ 168 °Cequilibrium temperature measured
Distance91.1 light-yearsfrom the Sun
Its star3,395 Ka red dwarf
One year5.8 daystime to orbit its star
Discovered2019transit

What it would be like in Worldwalk imagined

Nobody has seen the surface of G 9-40 b. The game builds it from the real numbers above: you land on hot, steamy shores of a water world.

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 G 9-40 b

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TOI-2018 b91.3 light-yearsTOI-5799 b90.7 light-yearsTOI-5799 c90.7 light-yearsHD 176986 d90.6 light-yearsHD 13808 b92.1 light-yearsHD 13808 c92.1 light-years

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.