Activity for k-l
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
No sunlight, just high-energy radiation? Is it possible for a planet to have very little visible-light energy and receive enough energy to support life from ionising radiation? Dim light, including starlight and ionized-air glow is acceptable. A planet in orbit around a binary star-black hole system: Pros: High x-ray radiation A star s... (more) |
— | over 8 years ago |