Designing alien life does not have to be complex as changing a bunch of chemicals. Changing orbits and designing life to survive the extremes is all it takes.
Example? Take Earth and put it farther from the sun. Oceans freeze over and less carbon dioxide is released.
Making life survive it? I dunno, higher body temperatures and metabolism could work, but they would be seeing white vapor every time they talk.... they would get used to that though.
The side effect is that they may overheat in hotter climates without wearing a suit or clothing with active cooling.
Closer orbit to sun? Think subterranean life to avoid getting toasted, or brief periods in the surface only to retreat to the subterranean caves. And you can forget birds unless their wings reflect more heat than they absorb.
Easy peasy
Designing Earth Clones Based On Distance To The Sun
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Keklas Rekobah
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Re: Designing Earth Clones Based On Distance To The Sun
Several star-system generation procedures and programs are extant. Some start with mass of the primary and the accretion disc and take "forever" to generate planets in stable orbits. Some start with stellar luminosity and plop randomly-generated worlds into (near-) harmonic orbits. Still others rely solely on dice rolls and data tables relating to orbits of fixed radius.
You could always just say something like "An Earth-like planet orbits about 1.1 AU from its G1-V primary" and be done with it.
You could always just say something like "An Earth-like planet orbits about 1.1 AU from its G1-V primary" and be done with it.
“Qua is the sine qua non of sine qua non qua sine qua non.” -- Attributed to many
Re: Designing Earth Clones Based On Distance To The Sun
"Making life survive it? I dunno, higher body temperatures and metabolism could work, but they would be seeing white vapor every time they talk.... they would get used to that though."
It's a leeeetle more complex than that. Generating body heat takes energy, but there will be less energy entering the planetary environment due to being farther away from the sun, so either another solution will be found, or there will be far fewer living things.
Living underground or deep under the sea results in... the exact same problem. There is a reason they call it the "Goldilocks Zone."
It's a leeeetle more complex than that. Generating body heat takes energy, but there will be less energy entering the planetary environment due to being farther away from the sun, so either another solution will be found, or there will be far fewer living things.
Living underground or deep under the sea results in... the exact same problem. There is a reason they call it the "Goldilocks Zone."