WORLDWALKKepler-42 b
Kepler-42 b is a hot small rocky planet orbiting a red dwarf star 130.7 ly away. A year there lasts 1.2 days. It was found using the transit method: it dims its star as it passes in front.
▶ Land on Kepler-42 bFree · plays in your browser
Gravity11.45 m/s²1.17× Earth measured
Size0.78× Earthradius measured
Mass0.71× Earthmeasured
Temperature≈ 246 °Cequilibrium temperature measured
Distance131 light-yearsfrom the Sun
Its star3,068 Ka red dwarf
One year1.2 daystime to orbit its star
Discovered2011transit
What it would be like in Worldwalk imagined
Nobody has seen the surface of Kepler-42 b. The game builds it from the real numbers above: you land on bare, cratered rock with no air.
- Air: None (bare rock). Surface pressure: almost none.
- A 70 kg explorer would feel like 82 kg.
- A jump that clears 50 cm on Earth would reach about 43 cm.
- With almost no air, a hammer and a feather fall side by side, and sound cannot travel.
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.