WORLDWALKGJ 581 e
GJ 581 e is a hot super-Earth orbiting a red dwarf star 20.5 ly away. A year there lasts 3.2 days. It was found using the radial velocity method: it makes its star wobble.
▶ Land on GJ 581 eFree · plays in your browser
Gravity12.78 m/s²1.3× Earth measured
Size1.38× Earthradius measured
Mass2.48× Earthmeasured
Temperature≈ 281 °Cequilibrium temperature measured
Distance20.5 light-yearsfrom the Sun
Its star3,500 Ka red dwarf
One year3.1 daystime to orbit its star
Discovered2009radial velocity
What it would be like in Worldwalk imagined
Nobody has seen the surface of GJ 581 e. 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 91 kg.
- A jump that clears 50 cm on Earth would reach about 38 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.