WORLDWALKPSR B1257+12 d
PSR B1257+12 d is a frozen water-rich world orbiting a pulsar (the dead core of an exploded star) 1,957 ly away. A year there lasts 98.2 days. It was found using tiny changes in its pulsar's radio pulses. 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 temperature is unknown, so the game assumes one.
What it would be like in Worldwalk imagined
Nobody has seen the surface of PSR B1257+12 d. The game builds it from the real numbers above: you land on a frozen shell of ice.
- Air: thin N₂ (nitrogen) · a guess. Surface pressure: 0.13 bar.
- A 70 kg explorer would feel like 84 kg.
- A jump that clears 50 cm on Earth would reach about 42 cm.
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.