[QUOTE=Awesomecaek;33582501]It's too massive. We couldn't live on the surface, anyway.[/QUOTE]
Large planets are not instantly uninhabitable
What does that even have to do with living on the surface
My mind
find me a planet in a habitable zone that's smaller so i can jump like michael jordan
[img]http://media.tumblr.com/tumblr_lpmpyv9dYR1qf7ef6.png[/img]
Holy shit we have ninjas ninja'ing other ninjas
[QUOTE=Wilford Brimley;33582718]Large planets are not instantly uninhabitable
What does that even have to do with living on the surface
My mind[/QUOTE]
Unless we found the marshmallow planet it will be either too heavy for us or gasseous.
[QUOTE=Psychokitten;33582567]Keep in mind, our planet developing life was a one-in-a-million sort of thing.
And that's just the single celled organisms, multicellular is a whole bag of coincidences on its own.
Don't get me started on how hilariously insane it is that we Humans exist.[/QUOTE]
But the universe is fucking huge, so there's easily the probability that there's more of intelligent somewhere else.
[editline]5th December 2011[/editline]
Question: Does bending spacetime actually change time?
[QUOTE=Flubadoo;33582822]But the universe is fucking huge, so there's easily the probability that there's more of intelligent somewhere else.[/QUOTE]
Yeah and that's even just within our own universe, without even getting into the idea of the multiverse, with different universes with different laws of nature than our own.. but I think that's outside the scope of this thread.
[quote]Question: Does bending spacetime actually change time?[/QUOTE]
Yes, massive objects create bends in the fabric of spacetime. Time runs slower near heavy objects.
[quote]In general relativity, clocks at lower potentials in a gravitational field—such as in closer proximity to a planet—are found to be running slower. The articles on gravitational time dilation and gravitational red shift give a more detailed discussion.[/quote]
[url]http://en.wikipedia.org/wiki/Time_dilation#Time_dilation:_special_vs._general_theories_of_relativity[/url]
[QUOTE=Flubadoo;33582822]But the universe is fucking huge, so there's easily the probability that there's more of intelligent somewhere else.
[editline]5th December 2011[/editline]
Question: Does bending spacetime actually change time?[/QUOTE]
no it just gives it a bit of a crease
[QUOTE=Awesomecaek;33582736]Unless we found the marshmallow planet it will be either too heavy for us or gasseous.[/QUOTE]
Not really. From what I understand, Earth has the gravity it has because of all the heavy metals locked up in the core.
It's theoretically possible for a planet to be larger and still have similar gravity. It would just have less metal.
[QUOTE=Psychokitten;33582865]Not really. From what I understand, Earth has the gravity it has because of all the heavy metals locked up in the core.
It's theoretically possible for a planet to be larger and still have similar gravity. It would just have less metal.[/QUOTE]
Which is statistically rather improbable. Keep on mind that a bigger body with small mass would have hard time forming at all.
It would more probably form more smaller planets.
if sci-fi has taught me anything it's that if you really want to go to somewhere cool just think real hard like you're being attacked by aliens and a guy in a blue box will come pick you up and you'll go on adventures and then die
[QUOTE=Awesomecaek;33582880]Which is statistically rather improbable. Keep on mind that a bigger body with small mass would have hard time forming at all.
It would more probably form more smaller planets.[/QUOTE]
As improbable as life forming in the first place?
It's all rather pointless because we have absolutely no reason for getting boners over shitty [I]maybe[/I] habitable planets lightyears far when we can barely move within our own solar system.
We don't even have a fucking moonbase. Our latest probe to our fucking enighbors, will fly there for 8 months.
Unless we make a [B]radical[/B] discovery in space propulsion (FTL), [I]we aint going anywhere.[/I]
600 light years away...it could probably be a dead world by the time people get there.
[QUOTE=SpaceGhost;33582930]600 light years away...it could probably be a dead world by the time people get there.[/QUOTE]
there was earth and then a bunch of people turned into knights and knaves and 600 years passed and everybody thought there was going to be a bitchin french revolution and cell phones but then the planet dieded.
[QUOTE=Psychokitten;33582900]As improbable as life forming in the first place?[/QUOTE]
Are you implying that because improbable things happen, it means that inprobable things can actually happen all the time?
Sure, if somebody tells me "We have seen the gravity deformation of light from it's star during it's pass over it and it's mass is 1,6 times that of earth", I will shrug and say that it's a luck.
But you are simply counting on things that are most probably not true.
[QUOTE=Awesomecaek;33582977]Are you implying that because improbable things happen, it means that inprobable things can actually happen all the time?
Sure, if somebody tells me "We have seen the gravity deformation of light from it's star during it's pass over it and it's mass is 1,6 times that of earth", I will shrug and say that it's a luck.
But you are simply counting on things that are most probably not true.[/QUOTE]
what if they're not improbable but they just happen very far apart and nobody is paying much attention because bob spilled coffee on sandy and everyone is having a great laugh with steve carrel and patrick stewart
[QUOTE=Lebowski;33582998]what if they're not improbable but they just happen very far apart and nobody is paying much attention because bob spilled coffee on sandy and everyone is having a great laugh with steve carrel and patrick stewart[/QUOTE]
Are you PUI or trying to be funny?
[QUOTE=Awesomecaek;33583023]Are you PUI or trying to be funny?[/QUOTE]
i haven't had my coffee
i have to resort to pop culture references
[QUOTE=Awesomecaek;33582977]Are you implying that because improbable things happen, it means that inprobable things can actually happen all the time?
Sure, if somebody tells me "We have seen the gravity deformation of light from it's star during it's pass over it and it's mass is 1,6 times that of earth", I will shrug and say that it's a luck.
But you are simply counting on things that are most probably not true.[/QUOTE]
You have a fair point there.
[QUOTE=Psychokitten;33582604]Were are we going to get 600 years worth of fuel, and how are we going to store it on a probe?
And how is it going to transmit information back to us when it's there?
[editline]5th December 2011[/editline]
Granted. But we can't just find a new planet and automatically assume it has life. We have to check first.[/QUOTE]
We don't need 600 years of fuel. We only need enough to get the rocket going in the right direction and to have enough kinetic energy to get it to a great speed, which in space isn't nearly as much as on Earth. Then only minor course correction, which would use almost no fuel, and fuel for slowing when we approach.
Gravitational acceleration at surface grows approximately linearly with radius, assuming constant density. Even so, 2.4g is high for humans, and there's no reason to assume anything about its density.
[QUOTE=Awesomecaek;33582699]It has 2,4 times the radius of earth, and unless it's a gas giant or such, it's density will be similar to that of earth. You would be lucky if your heart was able to pump blood from your legs to your head.[/QUOTE]
If you're assuming its density is similar to Earth's (which is a crazy-ass assumption, but let's roll with it), then it'll have a density of about 5500 kg/m^3
If it has a radius 2.4 times the Earth's, it will have a radius of about 2.4*6.4*10^6 = 1.5*10^7 metres. This means its total mass will be 5500kg/m^3 * 4/3*pi*(1.5*10^7 metres)^3 = 8.3*10^25 kg. That's quite a bit bigger than Earth's mass, but check it out...
Consider a block of mass m at that distance r, the radius of Kepler-22b.
Combining Newton's law of universal gravitation, F = GMm/r^2 (where M is the mass of Kepler-22b) and Newton's second law of motion, F = ma :
GMm/r^2 = ma
GM/r^2 = a
if p is the density, then p = M/(4/3*pi*r^3)
rearranging gives 4/3*pi*p*r = M/r^2
put that into the original equation to get a = 4/3*pi*G*p*r
this 'a' is the acceleration due to gravity at the planet's surface.
If everything in the equation is the same for Earth and Kepler-22b apart from the radius r, then increasing r by 2.4 times is going to give 2.4 times the gravity.
To check : G is the gravitational constant (6.67*10^-11, I forget the units), r is the radius of Kepler-22b, and p is the density of Earth, then a = 23ms^-2, which is about 2.4g.
The assumption that we used isn't very good, since the density of Earth is kind of freakishly large compared to other planets, due to its large iron core.
2.4g isn't enough to stop your blood flowing, and I can't do a proper calculation until I know its mass, which is definitely going to be a hell of a lot less.
[editline]5th December 2011[/editline]
[QUOTE=ThePuska;33583077]Gravitational acceleration at surface grows approximately linearly with radius, assuming constant density. Even so, 2.4g is high for humans, and there's no reason to assume anything about its density.[/QUOTE]
fuck youuuuuuu
[editline]5th December 2011[/editline]
I had to derive that all myself, I'd forgotten it all, haha
600 light years is a long way from home.
I still have hope that we'll one day be able to break reality and travel faster than the speed of light, and become invisible so we can watch ladies go to the bathroom.
One Step closer to killing god
Fuck yes, time to build us an interstellar expedition and--
[quote]The planet’s radius is about 2.4 times that of the Earth. It is located about 600 light years away.[/quote]
Oh. Well that's never gonna happen.
dont worry guys, one day an alien civilization will come to us instead.
[editline]5th December 2011[/editline]
[sp]optimistic as flying fuck[/sp]
[QUOTE=SpaceGhost;33582930]600 light years away...it could probably be a dead world by the time people get there.[/QUOTE]
That's what generation ships are for, you won't make it, but your great-great-great-great(a lot more greats) grandkids will!
600 light years is pretty far away, but it's still better than those that are billions of light years away from Earth. I think migrating to the planet might be very plausible eventually as technology advances.
[QUOTE=Turnips5;33582440]Unfortunately it's too far away. [b]Light is the fastest thing in the universe[/b], and as the article states, it takes 600 years for light to get there, so we don't have much of a chance of getting there any time soon.[/QUOTE]
Not any more apparently.
If you think about it, earth has a small size (But not necessarily mass) compared to other planets (Super-earths) near a habitable zone.
Acually, all our planets (and sun) and small compared to other systems.
Were the shortys of the universe :(
[QUOTE=B!N4RY;33583342]600 light years is pretty far away, but it's still better than those that are billions of light years away from Earth. I think migrating to the planet might be very plausible eventually as technology advances.[/QUOTE]
We might need to crumple up space and tear it according to some ideas, or phase into another dimension (Like the neutrino for example) to get there. Even so it might take [u][b][i]600[/i][/b][/u] years to get that tech, even so it would still take more than 600 years to get there if we did use the conventional method (Boosters/rockets and no friction in space) because we cant achieve 100% light speed, and it would be difficult getting close.
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