Activity for Sashaâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Victorian astronomer detecting artificial satellites To make it short, time-space shenanigans transported everything in a 60 kilometers circumference around an old space-based particle collider to the year 1855. The particle collider was in geosynchronous orbit with Earth, in a region of space that was heavily packed with space junk: Pieces of old shi... (more) |
— | about 6 years ago |
| Question | — |
Energy generation for spaceships Consider a near-future situation where humans have begun to explore the solar system, most groups are still working to start a profitable mining operation and only a few ships have gone beyond Jupiter. There is a space station orbiting the Moon, and in a few more years there will be a permanent base ... (more) |
— | over 6 years ago |
| Question | — |
How early can nuclear reactors be built? Given ample access to uranium and a race that is naturally resistant to radiation poisoning, how soon could a civilization invent nuclear reactors? (more) |
— | about 7 years ago |