Activity for Pink Sweetenerâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Using an Asteroid's Momentum for Spaceship Propulsion There's a lot of talk on futurist blogs about mining asteroids for propellant and other resources for space travel, but I have something else in mind. Could a spaceship, starting out in geocentric orbit, somehow grab onto an asteroid with a highly elliptical orbit and use that asteroid's momentum to... (more) |
— | almost 5 years ago |
| Question | — |
What does a solid, 1 mile diameter subterranean glass sphere look like? There is a solid glass sphere that is 1 mile in diameter. It is completely covered in dirt and rock, except for one small room that is built adjacent to the sphere. One of the four walls of this room is the surface of the sphere. What would the sphere look like to someone standing in this room hol... (more) |
— | over 5 years ago |
| Question | — |
In a post-fossil fuel economy, what could natural gas pipelines be used for? The United States (as well as many other countries) is covered in a vast network of tubes: These tubes vary greatly in diameter. Some could hardly fit a baseball, while others are large enough to comfortably fit a prone human. In a future world of renewable energy, where this natural gas infr... (more) |
— | almost 6 years ago |