Activity for Double_S
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
How would hands or hand-like appendages evolve from ray-finned fishes? Tetrapods evolved fingers from the inner-bones of the fins of lobe-finned fish, could hands ever evolve from ray finned fishes if they were to become fully terrestrial, from a mud skipper ancestor? (more) |
— | about 4 years ago |
| Question | — |
What kind of lunar orbit would cause a total solar eclipse to happen once a day? The eclipse needs to be visible from at least one region on the planet every revelation and last about one hour. (more) |
— | about 4 years ago |
| Question | — |
Would a human-level intelligence octopus be able to preform surgery in a low-gravity room? A giant pacific octopus has around 250 suckers per arm that it can use to manipulate small items. If theoretically, one of these animals was given human intelligence, and of course proper medical training, would they be able to do something as delicate as surgery? The surgery takes place in a low g... (more) |
— | about 4 years ago |
| Question | — |
Does life need to start in water, or can life generate on land, or perhaps in air? Is it possible that life could come about on land if a planet has a dense atmosphere? (This applies to non-carbon based life as well). (more) |
— | about 4 years ago |
| Question | — |
Could bones (or bone-like structures) evolve from muscle tissue? Hypothetically, if an animal such as a cephalopod were to become terrestrial, and walking gradually evolved from crawling, would hardened muscle be likely to evolve as support, with articulation to allow for bending. If so, how would these bones differ from vertebrate bones. (more) |
— | over 4 years ago |
| Question | — |
Could life generate twice on a planet using slightly different materials? Extremely low possibility, but if life synthesizes from scratch after life has existed on a planet for a few million years, would the two separate lineages be able to co-exist? (more) |
— | over 4 years ago |
| Question | — |
Are "plants" and "animals" inevitable on an alien planet? Is it simply inevitable that on a planet organisms would split into motile and non-motile groups. I'm planning on creating slime-like amoebic chemotrophs for my light devoid-planet that are the "plant" equivalent to earth. Is it improbable that none of these creatures become tree-like in nature and r... (more) |
— | over 4 years ago |
| Question | — |
Alien planet concept: could a completely misty, dark atmosphere be possible? I was thinking of creating an alien planet that orbits a star slightly past the habitable zone, but is kept warm by an extremely dense atmosphere, made primarily of a black gas, but still contains oxygen, nitrogen, and other gasses that support life on earth. If this is plausible, what gas could be t... (more) |
— | over 4 years ago |