Activity for user_194421
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Wormhole travel system: how would they connect the systems? Here, star systems are connected with "wormholes". The wormholes facilitate travel at $250\ c$, regardless of mass. They are made using special ships. Any travel (including military vessels) not through the wormholes is well below light-speed (not more than $0.05\ c$, ). It takes a road builder ship... (more) |
— | over 6 years ago |
| Question | — |
A planet with radius 128 km: ocean The planet has a radius of 128 kilometres and the surface gravity is the same as Earth's. My calculations have discovered that the planet would have a density of about 50 times the Earth's: $$gP=gE$$ $$\frac{GMP}{(rP)^2}=\frac{GME}{(rE)^2}$$ $$\frac{\rhoPVP}{(rP)^2}=\frac{\rhoEVE}{(rE)^2}$$ $$\frac{\... (more) |
— | about 7 years ago |