WORLDWALKPSR B1257+12 c
One of the first exoplanets ever found (1992), orbiting a pulsar: the spinning remnant of a star that exploded. Its sky holds a tiny, intense point of light.
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Gravity11.56 m/s²1.18× Earth measured
Size1.91× Earthradius measured
Mass4.3× Earthmeasured
Temperature?unknown: the game assumes about −98 °C
Distance1,957 light-yearsfrom the Sun
Its star?a pulsar (a dead, spinning star)
One year66.5 daystime to orbit its star
Discovered1992pulsar timing
What it would be like in Worldwalk imagined
Nobody has seen the surface of PSR B1257+12 c. 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 42 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.