Activity for taylor swiftâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Advanced civilization on planet with atmosphere only in large sinkholes I want to have an Earth-sized planet (with similar gravity) with an extremely low-density atmosphere (comparable to Mars) at most of its surface. Complex life, including an information-age civilization, lives in enormous sinkholes many kilometers across, some up to 100 km across. Due to the lower ele... (more) |
— | over 6 years ago |
| Question | — |
Lunar maria, always on the side facing the planet? Suppose we have an Earthlike planet, with a rocky moon orbiting it. Under what conditions would dark lunar maria form on its surface, and would they always be on the side facing the planet? For Earth's Moon, it appears that the maria face the Earth due to heat radiating from the molten Earth. How uni... (more) |
— | almost 7 years ago |