10 votes

Spacecraft Design of a Cold-Blooded Humanoid Race

On Earth, the range of environmental conditions is quite narrow; most places where you’d find cold-blooded animals, the range of temperatures is perhaps 20 Kelvins. In that context, human ...
bobtato's user avatar
  • 4,779
5 votes

What temperature range would a country north of Spain and west of France have?

Roughly the same temperature as real-world France ... Just a bit warmer. France's climate is dependent on a good part of its long western coast. Western winds from the Atlantic ocean brings rains, and ...
Tortliena - inactive's user avatar
5 votes
Accepted

Spacecraft Design of a Cold-Blooded Humanoid Race

Anabiosis would be easier to implement Most cold-blooded creatures, likely including your species, are able to hibernate during cold seasons, with their body temperature going below zero Celsius. ...
Vesper's user avatar
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4 votes
Accepted

Temperature of an Earthlike planet in Mars location?

When sunlight hits a planet, a fraction "a" reflects off the planet, with the rest, (1-a), being absorbed. a is the albedo of the planet. For Earth, the effective albedo is 0.3. Half of that ...
causative's user avatar
  • 7,312
4 votes
Accepted

Calculating the total thermal energy contained within an object

The theorem of equipartition of energy states that molecules in thermal equilibrium have the same average energy. Using the theorem, you can derive a formula for the average kinetic energy of ...
BMF's user avatar
  • 6,778
3 votes

Would a habitable moon orbiting a Gas Giant experience a runaway cooling effect? (on the side that faces the giant)

No problem. Over time the moon will come to equilibrium. The only question is if this final state habitable or not. "Too cold" problem is easily solved by making the star warmer. "...
D'Monlord's user avatar
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3 votes
Accepted

Would a habitable moon orbiting a Gas Giant experience a runaway cooling effect? (on the side that faces the giant)

Radiation is an inefficient means of losing heat, and the colder the moon gets, the more inefficient. Consequently, it will stabilize at the point at which the decreased radiation counterbalances the ...
Mary's user avatar
  • 28.4k
3 votes

How Effectively Could You Use Magical Darkness As A Compact Heatsink?

Purely radiative heatsinks are somewhat inconvenient. Heat transfer into a convecting fluid (eg. air or water on a planet) is pretty effective... that's why heating elements in kettles are bar heaters ...
Starfish Prime's user avatar
2 votes
Accepted

Necessary distance for an ammonia world from Toliman

Looking at a phase diagram (Richter & Niewa 2014) and doing some estimating, at 3 bars, ammonia is liquid at temperatures between ~200 K and ~275 K. Since Alpha Centauri B is about half the ...
HDE 226868's user avatar
  • 101k
2 votes

Temperature of an Earthlike planet in Mars location?

If Mars had an atmosphere similar to the Earth then the planet would exist in a state far beyond it's equilibrium point and a range of different processes would transform it over a range of different ...
Slarty's user avatar
  • 37.3k
1 vote
Accepted

If Titan was suddenly raised to an earth-like temperature, how long before it melts?

I'm not entirely convinced a single number can be given to you as different frozen materials unfreeze at different rates. But ice here on earth melts at the very rough rate of 2.5 cm per day and Titan'...
JBH's user avatar
  • 122k
1 vote

Is it possible for a super Earth to have this specific atmospheric composition?

Clearly, the planet has lots of life on it, which includes life that produces oxygen as a waste product. On Earth, that's mostly done by plants, but a different planet might be differently arranged. ...
John Dallman's user avatar
  • 24.5k
1 vote

How Effectively Could You Use Magical Darkness As A Compact Heatsink?

I think the best option would be to have a transparent heat-transfer fluid run through a section of darkness, which would absorb all the heat radiated from every single atom of fluid that runs through ...
M S's user avatar
  • 2,269

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