WORLDWALKOGLE-2005-BLG-390L b
Found by gravitational microlensing about 21,500 light-years away, near the galactic center. At around −220 °C it is one of the coldest known exoplanets.
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Gravity11.05 m/s²1.13× Earth measured
Size2.21× Earthradius measured
Mass5.5× Earthmeasured
Temperature≈ −223 °Cequilibrium temperature measured
Distance21,500 light-yearsfrom the Sun
Its star?a star of unknown type
One year9 Earth yearstime to orbit its star
Discovered2005microlensing
What it would be like in Worldwalk imagined
Nobody has seen the surface of OGLE-2005-BLG-390L b. The game builds it from the real numbers above: you land on a frozen shell of ice.
- Air: None, frozen out. Surface pressure: almost none.
- A 70 kg explorer would feel like 79 kg.
- A jump that clears 50 cm on Earth would reach about 44 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.