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K2-288 B b

K2-288 B b is a cold water-rich world orbiting a red dwarf star 214 ly away. Its star system has 2 stars. A year there lasts 31.4 days. It was found using the transit method: it dims its star as it passes in front. 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 mass is estimated from its size. It sits where a planet could be warm enough for liquid water, in the so-called habitable zone.

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EarthK2-288 B b
Gravity11.6 m/s²1.18× Earth estimated
Size1.9× Earthradius measured
Mass4.27× Earthestimated
Temperature≈ −47 °Cequilibrium temperature measured
Distance214 light-yearsfrom the Sun
Its star3,341 Ka red dwarf, in a system of 2 stars
One year31.4 daystime to orbit its star
Discovered2018transit

What it would be like in Worldwalk imagined

Nobody has seen the surface of K2-288 B b. The game builds it from the real numbers above: you land on a deep ocean under a hydrogen sky.

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 K2-288 B b

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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.