Timeline for Plausible evolutionary pressure for an organism to evolve space flight?
Current License: CC BY-SA 4.0
8 events
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| Jun 16, 2022 at 20:27 | comment | added | TitaniumTurtle | @LoganR.Kearsley I was reading too quickly and missed the ice shell part of your comment. The response was more for Trioxidane, but obviously the one part I missed still makes all the difference. | |
| Jun 15, 2022 at 20:17 | comment | added | Logan R. Kearsley | @TitaniumTurtle You just admitted that "a pre-existing life form might develop in a way to survive in space" That's exactly what I proposed, so what exactly is your objection? | |
| Jun 15, 2022 at 19:22 | comment | added | TitaniumTurtle | @LoganR.Kearsley & OP There is no life outside of an atmosphere. Stellar radiation basically burns everything away. It's like sterilization by means of broad spectrum laser. Sure, a pre-existing life form might develop in a way to survive in space, but there is no way life would naturally develop without an atmosphere, at least a thin one. That's one of the biggest reasons Mars only has traces of microbial life hidden under layers of ice and rock. Even with suits we could only stay there sustainably with layers of radiation shielding and Mars actually does have an atmosphere, asteroids don't. | |
| Jun 15, 2022 at 18:32 | comment | added | Trioxidane | @TitaniumTurtle Logan is correct. The intent is to develop life that is already focusing on living without atmosphere. They are set to hoard important molecules and hold on to them. That makes them more plausible than creatures needing to transit from atmosphere to space and back. The requirements for living in atmosphere are just different than space. | |
| Jun 15, 2022 at 18:19 | comment | added | Logan R. Kearsley | @TitaniumTurtle Who says you need an atmosphere? Just develop under an ice shell, and move directly into vacuum. | |
| Jun 15, 2022 at 18:15 | comment | added | TitaniumTurtle | Asteroids are far too small and irregular in shape to develop a sustainable atmosphere. Moons or dwarf planets might be a feasible origin, but even all of the asteroids in the trojan belt combined would be smaller than our moon. | |
| Jun 15, 2022 at 17:50 | history | edited | Trioxidane | CC BY-SA 4.0 |
added 1 character in body
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| Jun 15, 2022 at 16:40 | history | answered | Trioxidane | CC BY-SA 4.0 |