Activity for alamarâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Looming spaceship in the skies. Height, size, radius? Imagine someone putting a battleship over a country, always in sight, in order to threaten them to not try anything funny. Imagine tech that allows to suspend the ship is not a problem. How high is it possible to put a starship in the atmosphere in order for it to be visible clearly on sunny day? As... (more) |
— | over 7 years ago |