Activity for Separatrix
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
How long would a flat Earth last? As we all know the Earth is flat. Once upon a time a group of explorers set off with the idea of proving that the world was round and that there was a route to the spice islands the other way, but the few survivors came back screaming about seeing ships falling off the edge of the world and something... (more) |
— | almost 6 years ago |
| Answer | — |
A: How can the Hertzsprung-Russell diagram be used in star building? I've grabbed an observational Hertzsprung"“Russell diagram from the wikipedia article about the same. In this case it's a plot of 22,000 stars and you can see that there's a lot more flexibility in where the stars lie, in practice a not insignificant number lie in some of the "black bits" of the sim... (more) |
— | over 6 years ago |
| Question | — |
How does Santa fit down the chimney? I have evidence that at some point last night a very large man, with a very large sack, somehow came down the chimney, left a gift under my tree, and departed without my noticing. There are sooty footprints in the carpet leading from the fireplace, remarkable given that it hasn't been used for 70 yea... (more) |
— | almost 7 years ago |
| Question | — |
Stellar Navigation for Dummies - Finding your way home Average Joe was an amateur astronomer. While he was out in the wilds one day with his telescope he was kidnapped by aliens, carried off and kept as a slave on a world somewhere in the Milky Way. Having learned enough of their language and technology to steal a ship he now needs to find his way home. ... (more) |
— | about 7 years ago |
| Question | — |
World Turtle - Reproduction There has evolved a species of turtles large enough to maintain an atmosphere of their own and travel interstellar space. We have already discovered how they don't collapse under their own gravity, but we don't know how they reproduce. Somehow, while still being oxygen breathers, these turtles have ... (more) |
— | about 8 years ago |
| Question | — |
Regional Climate in a Dyson Sphere A Dyson Sphere, being a sphere, is a uniform "equatorial" climate across the entire surface. I consider this to be a major problem. Somewhere between the Dyson Sphere and the Dyson Hyperboloid is an ideal Dyson shape which allows us to maintain the variety of Earth's climates from equatorial, throug... (more) |
— | over 8 years ago |