i don't plan to elaborate them so its not very detailed, because it would be very long and complicated if i
elaborated more. XD
but anyways
Quote by XRW175P6MQ4
Its not intelligent designn its more like luck. There are a seemingly infinite number of planets and stars out there so
it doesn't seem to be to unlikely that one of the number could have just the right conditions for life. It justs
happens that Earth is the one planet at least that we know of that happens to be just right for life. It is not the work
of God it is just plain dumb luck.
for your information i do not support intelligent design :) .
Quote by DarkRoseofHell
Well, theres that idea of this place being the perfect position, but is it the sun's position, or is it us adapted
to it? I mean there are cells / bacterias (whatever you want to call it) that live near or pretty much on a volcano, and
live in waters that would prove deadly to us. People have to note that all organisms aren't the same, and there are
those that have adapted to what people have considered the extreme. As for the asteroid belt, I don't read a lot
about that, I don't plan to be an astrologist anyways.
that would be bio-astrologist :)
(almost) perfect position in SOL. for example, earth would be roast turkey if its in the similar position as of mercury.
then, earth would be a snowball if it's behind mars. then again, if earth is in the oort cloud, alien astronomers
would define earth as a comet. earth would be the asteroid belt if earth was positioned between mars and jupiter. (or if
theres a gas giant in front or behind) and blah blah blah...
bacterias do live in volcanic areas. but they are but simple life forms. there's no *clever* bacteria, is
there?
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Do realize that partially we don't burn and torch up already is because we have an ozone layer. The axis tilt
isn't all of it.
yes, ozone layer deflects all kinds of radiations from the sun; but the major factor is the tilt. that's why summer
is hot and winter is cold. eternal summer would roast us and eternal winter will preserve us forever
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To some extent, the 1st may seem possible, and it really depends (personally speaking) as there are more than one thing
effecting earth's heat, as there are things that are emitted from earth underground and such, rather than just
purely the sun's ray. Also, I'm not entirely sure on this, but isn't there more than one causes of
storms? Cause usually some storms like a hurricane is caused by a mix of hot / cold air (or something like that,
I'm forgetting a lot, :P) and thats what causes it.
storms are electrical charges + temperature difference between poles n equator + ground and atmosphere temperature at
that location ( if im not mistaken, i cant remember too)
earth do emit infrared red in fact, because the core is still hot. but faster rotational speed means stronger air
current. stronger air current means more friction between earth's surface. more friction means more charge between
the atmosphere and the surface. more charge simply means more violent(and destructive) storms.
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You could refer to the one about heat and such. If it was too strong, we probably end up adapting to it by gaining more
strength and such, (my own speculations, since no one can really do this atm). And another thought on the too weak part.
Partially what causes the whole meteor / asteroid / whatever huge rock out there to burn up in our atmosphere is due to
our atmosphere and the gravity and wind friction (or whatever its called). Though if you want to look at it in another
way, if the gravity itself is less and less, the meteors may not burn out or let alone burn, but then, wouldn't the
impact be less devestating? I mean, if you look at our world, if an asteroid or meteor of a pretty good size does indeed
impact our world, it can pretty much screw us over, but if you look at a smaller planet, it may do less damage than it
would have on earth as the acceleration is a lot lower. (This is also assuming that the asteroid / whatever itself
isn't already moving at crazy fast speed for both earth and another place). A way to look at it is that the harder
it hits, the more damage it does, which is why, in theory, you can take a metal hammer, and smash a piece of diamond, if
given enough force.
look at Mars. why the atmosphere is so thin? in fact, astronomers thought Mars had thicker atmosphere. It became thinner
because the gravity cant sustain the atmosphere.
meteorites burn up because of friction with the air in earth's atmosphere, not because of the heat from earth.
impact force is resulted by the mass of the object and the its acceleration.
so, yes you are right; stronger gravity means stronger impact (if it can ever reach the ground) but it would mean
stronger friction, thus it would burn up faster. But then, stronger gravity means thicker atmosphere, and again thicker
atmosphere means more friction + duration of (heavy) friction. you can refer to Venus if you want a terrestrial planet
with a thick atmosphere.
+ heavy gravity = thick atmosphere
thick atmosphere = high pressure
high pressure = hot
hot = no life. even if there is, the most we find would be bacterias
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Active or not though, releasing the heat doesn't mean all over the place, thus not completely blowing up a whole
world. And also, doesn't active plates mean earthquakes? :P
well, wiki about Venus and you probably will know what i mean.
you are right about that. life is hard on VERY active tectonic plates.
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High pressure doesn't really mean much, as you yourself said, less "likely" doesn't mean its
impossible. Also, a less dense atmosphere would mean that the planet itself is pretty small to begin with, and if water
is evaporating at such a rate due to pressure, well, thats one tiny planet, mainly cause the planet's gravity has
quite a bit to do with the planet's atm, and the planet's gravity is whats keeping the CO2, Nitrogen, etc etc,
more closer at earth, rather than flying all over the place. Plus, it doesn't mean every organism has to thrive on
water, personally speaking I believe that there are organisms that have adapted to what some people call the
"extreme" and such.
i did say less likely. like you mentioned, there are bacterias living near volcanoes right? but we don't usually
see anything more complex than that, right?
how thick or dense the atmosphere is completely depended on the planet's gravitational pull. gravitational pull of
course depends(major factor) on the mass (and its density) of the planet.
you'd say extreme but do you realise that no matter how extreme, more complex organisms need H20? more primitive
life depends more on nitrogen though, that's why you find bacterias near/on volcanoes.
about gases flying all over on the surface, refer above on gravity & atmosphere.
anyway i made a mistake by saying water "evaporated" into space. actually it's not. its something about
H20 disintegrating in the atmosphere and the going further and further up in the atmosphere where finally escapes into
space. (some complex atmosphere chemistry there, and im no good in chemistry)
another thing is water is seeping into earth faster than water coming out from the surface. (making a drier earth) i
think you can google around for that info.
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For #8, refer back to the luck idea.
#9, well... there actually have been planets found to have even more water mass than ours, and not just in ice. (Forgot
exactly whats the planets name is called, I saw it on History Channel)
i think you mean methane and stuff. they form water by (more chemistry :() when there is more heat. you can actually
extract water from asteroids also, because water can be found inside rocks.
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You do realize that all of this has to do with luck right? We have past 4 billion years of time, and every instance of
time in itself can have that "spark" or beginning (whatever you want to call it) for life.
we have 2 choices of beliefs here.
(1) God created us.
(2) we are VERY VERY lucky.
as you probably know what my answer would be, i guess you would choose choice (2), even though the chances of us being
here is not even close to 0.001%
did i mention about periodical mass extinctions on earth since life formed till today? but, that's another VERY
LONG story :/