Human can't live on other planets

yes about 0 Celsius degrees for water temperature. Remember its water...but than I have no idea about pressure there...

I don't know Dywyddyr, I mean I need data for temp and pressure to really say if its possible or not.

 

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Uh huh.
At, or around, zero C.
Now look up survival figures for men overboard in Arctic waters (something like, say, the Russian convoys in WWII).
If the shock didn't kill when the poor guys entered the water they died very shortly afterwards in the vast majority of cases.
Thermal insulation is a must.
Regardless of pressure.

 

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Thats is biochemistry (intense here) that is surfing on the edge of science... There is missing a lot of data, it is why it is so crucial to experience space!
The poles will reverse, but their polarity will remain unchanged unless the planet decides to turn the other way around (which is impossible unless we hit another planet our size).
Actually all life forms on Earth have the same racemic polarity, which have bring the scientists to concludes that our planet magnetic field was involve in this process.
Of course, our universe is mainly an electric Universe, so magnetic fields are all around, but the cells breakdown can only be experience inside a gravitational influence, which will help break apart the DNA structure over time. So we can live in space without gravity but not on a planet having one!

Thats why NASA never set a base on the moon, and wont do it... As for Mars, we could take a look at her for a while, but I won't bet on the success of a man base mission to Mars!

 

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are you dence or something?
wait till night time and go outside.
Then just point your dum ass head up and LOOK!

 

Perhaps I should have started this thread in Astronomy subfora, but as I thought it'd be more like a free thought, I put it here.

I have few questions regarding the temperature of planets:
- what factors are influencing the temperature of planets? is it the distance to the nearest star(s)? is it the amount of radiation emitted by the nearest star(s)?
- how do people measure temperature or amount of radiation of a star?
- if we know the temperature of a star, and the distance between the star with its surrounding planets, can we predict the temperature of the planets? say we know a temperature of a star which is surrounded by 100 planets, can we predict which planets among the 100 whose temperatures are habitable by human or other life based on the information of the temperature or radiation of the star and the distance of the planets to that star?
- are there more stars or are there more planets in the universe?

 

:roflmao:

 

Both, plus other factors.
Being near to a cool star would give the same base temperature as being further away from a hotter star. But there are other factors, such as albedo and atmospheric composition (for heat retention), etc.

One way is from the colour!
Hotter stars burn at "brighter colours".
http://www.astronomynotes.com/starprop/s5.htm
Looking at the spectrum produced gives very good figures.

Yes.
But:
We can say which ones will be likeliest to be habitable, but unless we know other factors (atmosphere type etc.) we have nothing more than a "very probably habitable" estimate.
http://en.wikipedia.org/wiki/Planetary_habitability

Ouch!
My first thought was "more stars", but read on.
As far as we know there are quite a few stars without planets, but planets* without stars (Rogue Planets) would be extremely hard to find: if they aren't round a star then we can't detect them by reflected light, and they don't introduce any gravitational wobble in a star for us to detect them that way.
But: we don't know how many stars do have planets, and how many they have.
So it's a question of do the number of planets around the stars that have them equal or exceed the number of stars without planets?
We have eight planets in our system (used to be nine!) so that makes up for 7 stars without planets to give us equal numbers...

One estimate gives 10[sup]21[/sup] stars (that we can see), and we only know of about 200 stars with planets so far*...
Another estimate says 10% of stars may have planets which would require an average of 10 planets per star that does have them to make the numbers equal.

* And don't forget, we only know about large planets, not Earth-sized ones.

 

Hmm... thanks for the informative reply. It will take me some time to check up the links

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