WORLDWALK55 Cnc e
A super-Earth so close to its star that its year lasts 18 hours and its surface likely holds a magma ocean. JWST found signs of an atmosphere, possibly carbon monoxide or dioxide.
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Gravity22.3 m/s²2.27× Earth measured
Size1.88× Earthradius measured
Mass7.99× Earthmeasured
Temperature≈ 1,685 °Cequilibrium temperature measured
Distance41 light-yearsfrom the Sun
Its star5,172 Kan orange dwarf, in a system of 2 stars
One year17.8 hourstime to orbit its star
Discovered2004radial velocity
What it would be like in Worldwalk imagined
Nobody has seen the surface of 55 Cnc e. The game builds it from the real numbers above: you land on a molten surface of lava seas.
- Air: possibly CO (carbon monoxide) / CO₂ (carbon dioxide) (JWST hint). Surface pressure: 1 bar.
- A 70 kg explorer would feel like 159 kg.
- A jump that clears 50 cm on Earth would reach about 22 cm.
- Every step is hard work: your legs carry far more than your body weight.
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 55 Cnc eSimilar worlds nearby
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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.