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Real Talk: Temperate Planets
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Sabriz Adoudel
Move along there is nothing here
#21 - 2013-12-16 06:41:19 UTC
WASPY69 wrote:
Jandice Ymladris wrote:
Remiel Pollard wrote:
[
The real question is...

Is it possible for that planet to be closer to the sun than the GZ and still be habitable? Blink


It would be hard (on high luminosity stars it could be easier, on low ones alot harder due to the tidal lock that will happen at such short distances), but considering what freaky exoplanets we discover every other week, I wouldn't rule it out.

Well let's just say it's not impossible, just very very, very unlikely. Look at Venus for example, there's signs it may have had water in the past, but it's atmosphere, consisting of 96% or something CO2 is basically a greenhouse effect gone out of control causing the temperature to evaporate all the water.
So "habitable" is all relative. Perhaps habitable for micro organisms living deep inside the crust or something.



I was under the impression that Venus's atmosphere was more H2SO4 than CO2. I could be wrong.

CO2 is not the only greenhouse gas, it is just that on Earth it is the one that has had the most change on our climate. Methane is significantly more active as a greenhouse gas, for instance.



Back on the original question, a planet with a highly reflective atmosphere could probably exist inside the inner boundary of the Goldilocks zone while still being inhabitable for human life. Consider how Earth has had phases of 'nuclear winter' caused by volcanic eruptions - a planet that was seismically active enough to have constant volcanic eruptions might have nuclear winters most of the time and could thus have a temperature under 50 celcius (122 F) constantly. It may even have polar ice caps. Such a planet would need an ecosystem that could absorb all of the sulfur that volcanoes tend to vomit out but perhaps bacteria (or some form of life with no Earth analogue) exist on it that can do just that.

Furthermore, a planet inside the Goldilocks inner boundary might be habitable near the poles but have an unsurvivable equator.

I support the New Order and CODE. alliance. www.minerbumping.com
Sim Cognito
Obani Gemini Corporation
#22 - 2013-12-16 12:56:14 UTC
Amber Kurvora wrote:
It's almost like it's a computer game where you're supposed to enjoy shooting things, and not worry about the scientific accuracy... Next up you'll be asking CCP to prove the biomechancial mechanism and software that allows the implants to interface with the human brain.


That doesn't mean that sci-fi (or any other setting) is exempt from being, at least to a degree, believable. This thread is nitpicking though.
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