Space · World
Mercury
A huge Sun; molten metal pools on the day side, frost on the night side; life on the moving twilight line.
In the game
How to get it
Phase 2, after Venus's fire resistance: land on the twilight line (the navigation table's Twilight line).
What it is for
Hermesite: running speed and magnetism. Iron, nickel and titanium in its rock; molten metal in its craters.
Why it exists
Stay too long in day or night and you die.
The same text the game shows in its progress tree and on the item's sheet (I).
At a glance
| Gravity | 3.70 m/s² (0.38 g) |
| Air | none: the Sun decides |
| Temperature | -180 °C at night, up to 430 °C in the noon Sun |
| Day | about 73 hours: the twilight line moves at ~9 m/s on the equator |
| Its alloy | Hermesite |
What you find
Fresh craters at every scale, one great ringed basin 60 km across (30° N, 170° E), lobate scarps tens of kilometres long, bright pale-blue hollows, ice in the crater floors near the poles that never see the Sun.