Activity for user73226
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Quick! How far away is that asteroid? How might an enterprising spacer, mining the rings of Saturn, go about quickly measuring/estimating the velocity of and distance to a nearby moving object (asteroid, habitat, pirate, etc)? Bonus points for measuring acceleration. The lower tech, the better! The Saturnians would rather a microprocess... (more) |
— | over 4 years ago |