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NimRad's user avatar
NimRad's user avatar
NimRad
  • Member for 7 months
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  • Germany
17 votes
8 answers
4k views

Is there a physical/structural upper-speed-limit to steam locomotives?

15 votes
6 answers
4k views

Would fixed-wing aircraft still exist if helicopters had been invented (and flown) before them?

12 votes
4 answers
2k views

Hazard symbols for exclusion zones

10 votes
8 answers
5k views

Space-ships and stations...made from cast-iron?

8 votes
7 answers
4k views

What would naval warfare look like if Dreadnoughts never came to be?

8 votes
7 answers
2k views

Expanding a modular space-station for 100 years

7 votes
9 answers
5k views

An atmosphere that gets denser with increasing altitude, to support these flying creatures

6 votes
6 answers
2k views

How possible is a habitable, liquid ocean-planet at temperatures below 0°C?

4 votes
3 answers
1k views

Is this ocean-planet stable?

4 votes
5 answers
2k views

The interplanetary cold war

3 votes
3 answers
705 views

The late-victorian nuclear-thruster

2 votes
3 answers
389 views

An ocean-planet made out of deadly, non-water chemicals