Activity for Mark
Type | On... | Excerpt | Status | Date |
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Question | — |
Re-working physics for a Newtonian universe There's a famous saying in science fiction: "Relativity, causality, FTL: pick two". I choose causality and FTL. In a Newtonian universe, where there's a privileged reference frame, the speed of light isn't an absolute limit, and Einstein was wrong, what parts of physics would I need to re-work? In... (more) |
— | about 8 years ago |
Answer | — |
A: How can you make a stable configuration including a moon that has a moon? In order for an orbit to be stable in the short term, it needs to be within the Hill sphere of its primary. For a circular orbit, the radius of this sphere is approximately: (more) |
— | over 9 years ago |