Overclock.net › Forums › Industry News › Technology and Science News › [io9]Our galaxy is home to more than 50 billion planets…and 500 million habitable one
New Posts  All Forums:Forum Nav:

[io9]Our galaxy is home to more than 50 billion planets…and 500 million habitable one - Page 4

post #31 of 104
Quote:
Originally Posted by bojinglebells;12461238 
you're right, he shouldn't say 50 million, so he didn't, he said 500 million. 50 million habitable planets by humans actually might be an accurate conservative amount.

which brings us to the fact that habitable zone means just that - its the best guess on where life can exist as we know it, it might not be intelligent life but we're talking about the possibility of extremophile bacteria etc...

which then also brings us to the fact that the habitable zone is just a best guess and doesn't count the fact that life could exist elsewhere in special circumstances (such as on the edges of a tidal locked planet that is otherwise considered too close to its parent star or too far out such as in the potential water oceans under Europa's icy surface, oceans hypothesized to exist to to tidal flexing caused by Jupiter)

** typo, I meant 500 million.

In any case, out of 500 million bodies existing in the habitable zone, how many of those do you think will be gas giants? atmosphere-devoid chunks of rock? superheated greenhouse planets? planets with exaggerated elliptical orbits? strange rotational axes? Just because liquid water could exist, doesn't mean it does.

In the same vein, how many of those stars are actually capable of supporting life? the number that have light curves peaking in ultraviolet or infrared is far more than you'd guess, despite them being on the main sequence. What if the stars are too active, or not active enough?

You see, I think there are far, far too many variables that would make planets in the HZ not actually habitable. I'm not saying there definitely isn't life there, but I'd say it's very very unlikely that life as we know it does not exist on one of those 500 million planets. 500 million isn't a lot, when you consider the permutations of planets that would not support life far, far outweighing the permutations that would
My System
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 5820K @4.4ghz Asus X99-S EVGA GTX680 2GB 32GB Crucial 2133MHz DDR4 
Hard DriveCoolingOSMonitor
120GB Samsung 830 | 120GB Samsung 840 EVO | 6TB... Noctua NH-D14 Windows 8.1 Achieva Shimian 27" 1440p 
MonitorPowerCaseAudio
Dell U2311h (Portrait) Corsair HX520 NZXT Phantom White Asus Xonar D2X -> Samson SR850 or HiFi 
  hide details  
Reply
My System
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 5820K @4.4ghz Asus X99-S EVGA GTX680 2GB 32GB Crucial 2133MHz DDR4 
Hard DriveCoolingOSMonitor
120GB Samsung 830 | 120GB Samsung 840 EVO | 6TB... Noctua NH-D14 Windows 8.1 Achieva Shimian 27" 1440p 
MonitorPowerCaseAudio
Dell U2311h (Portrait) Corsair HX520 NZXT Phantom White Asus Xonar D2X -> Samson SR850 or HiFi 
  hide details  
Reply
post #32 of 104
Quote:
Originally Posted by Scorpii;12459643 
50 million in the habitable zone does not equal 50 million habitable planets...

I think you should change the title!

Only a minuscule proportion of these would actually be 'habitable', and even then only with a lot of technological help

The point is moot. This is an estimate for our tiny galaxy alone. You add up the number of planets in the entire known universe, and I guarantee you're going to find a **** ton that are as habitable as Earth. So quite trying to make presumptuous arguments with absolutely no scientific backing in some attempt to nitpick. Besides, you're limiting your definition of what is considered "habitable" by convincing yourself that Earth-like = habitable. This is probably not the case.
Metal Case
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 ASUS GeForce GTX285 1GB 6GB Corsair 
Hard DriveOSMonitorPower
500GB Vista Ultimate 64-bit Asus 24" 850W 
  hide details  
Reply
Metal Case
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 ASUS GeForce GTX285 1GB 6GB Corsair 
Hard DriveOSMonitorPower
500GB Vista Ultimate 64-bit Asus 24" 850W 
  hide details  
Reply
post #33 of 104
Quote:
Originally Posted by kremtok;12459585 
Reminds me of The Drake Equation.

the_drake_equation.png

The first time I saw this I laughed. The remaining 10k times I've found it more and more annoying, as people post this and are 100% serious. It's an educated guess. No one assumes to have the answer, but the equation tries to give the casual American idiot an idea of just how incredibly huge just the Milky Way is and how likely it is that there are other intelligent civilizations out there, even when trying to conservatively estimate the variables. This is what I got from Wiki about it.


The Drake equation states that:

N = the number of civilizations in our galaxy with which communication might be possible;

and

R* = the average rate of star formation per year in our galaxy
fp = the fraction of those stars that have planets
ne = the average number of planets that can potentially support life per star that has planets
fℓ = the fraction of the above that actually go on to develop life at some point
fi = the fraction of the above that actually go on to develop intelligent life
fc = the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
L = the length of time for which such civilizations release detectable signals into space.[3]
Edited by FuNkDrSpOt - 2/21/11 at 5:25am
    
CPUMotherboardGraphicsRAM
PII x4 965 Asus m3a79-T Sapphire TOXIC 5850 OCZ Reaper 2x2gb DDR 1066 
OSMonitorPowerCase
Stupid Vista Samsung 2494SW OCZ GameXstream 700w Corsair 600T 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
PII x4 965 Asus m3a79-T Sapphire TOXIC 5850 OCZ Reaper 2x2gb DDR 1066 
OSMonitorPowerCase
Stupid Vista Samsung 2494SW OCZ GameXstream 700w Corsair 600T 
  hide details  
Reply
post #34 of 104
Quote:
Originally Posted by Porthios;12466948 
The point is moot. This is an estimate for our tiny galaxy alone. You add up the number of planets in the entire known universe, and I guarantee you're going to find a **** ton that are as habitable as Earth. So quite trying to make presumptuous arguments with absolutely no scientific backing in some attempt to nitpick. Besides, you're limiting your definition of what is considered "habitable" by convincing yourself that Earth-like = habitable. This is probably not the case.

This!

What may be habitable for us, may not be the same for other beings. We need water and oxygen and stuff, maybe other beings don't, who knows? smile.gif
     
CPUMotherboardGraphicsRAM
Intel Core 2 Duo P7350 @ 2.0 ghz Acer Eiger NVidia GeForce 9600M GT 3 GB DDR2 
Hard DriveHard DriveCoolingOS
320 GB Western Digital Elements 1TB Laptop cooler Windows 7 Ultimate x86 SP1 
OSMonitorMouseAudio
Ubuntu 12.10 LG Flatron M227WDP 22" A4Tech XL-747H Trust Soundforce 5.1 
Audio
Pioneer SE-M290 headphones 
CPUGraphicsRAMHard Drive
Intel Core i5 3337U @ 1.8GHz (up to 2.7GHz) NVidia GeForce GT 720M 6GB DDR3 750GB 
OSOSMonitor
Windows 7 Ultimate x64 SP1 Debian LG 24EN43 24" 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel Core 2 Duo P7350 @ 2.0 ghz Acer Eiger NVidia GeForce 9600M GT 3 GB DDR2 
Hard DriveHard DriveCoolingOS
320 GB Western Digital Elements 1TB Laptop cooler Windows 7 Ultimate x86 SP1 
OSMonitorMouseAudio
Ubuntu 12.10 LG Flatron M227WDP 22" A4Tech XL-747H Trust Soundforce 5.1 
Audio
Pioneer SE-M290 headphones 
CPUGraphicsRAMHard Drive
Intel Core i5 3337U @ 1.8GHz (up to 2.7GHz) NVidia GeForce GT 720M 6GB DDR3 750GB 
OSOSMonitor
Windows 7 Ultimate x64 SP1 Debian LG 24EN43 24" 
  hide details  
Reply
post #35 of 104
Are you guys talking about this?

[ame]http://www.youtube.com/watch?v=MlikCebQSlY[/ame]
post #36 of 104
Quote:
Originally Posted by Chunky_Chimp;12459667 
No, it's the article title. Using any other would be against news posting guidelines.

The rules need to be amended then. I am getting sick of seeing misleading thread titles and the resulting wave of posts from ignorant users who read nothing more than that and make a subsequent ignorant post.
 
Project Al
(69 photos)
 
CPUMotherboardGraphicsRAM
Intel 2700k Gigabyte UD4 MSI 580GTX Lightning Xtreme Edition 3GB 2x4GB G.Skill @ 1600mhz CL6 
Hard DriveHard DriveOptical DriveOS
OCZ Vertex II SSD OCZ Vertex II SSD LG Blu-Ray/HD-DVD Combo Drive Win 7 Ult 
MonitorMonitorKeyboardPower
Achieva Shimian Acer G235H XArmor U9BL Corsair HX1000W 
CaseMouseMouse PadAudio
Fractal Define R3 Silver Arrow Razer Naga Ultimate Razer Goliathus Speed Edition Polk Audio RTi-A1 
AudioAudio
Dayton Audio DTA-100a Asus Xonar STX 
  hide details  
Reply
 
Project Al
(69 photos)
 
CPUMotherboardGraphicsRAM
Intel 2700k Gigabyte UD4 MSI 580GTX Lightning Xtreme Edition 3GB 2x4GB G.Skill @ 1600mhz CL6 
Hard DriveHard DriveOptical DriveOS
OCZ Vertex II SSD OCZ Vertex II SSD LG Blu-Ray/HD-DVD Combo Drive Win 7 Ult 
MonitorMonitorKeyboardPower
Achieva Shimian Acer G235H XArmor U9BL Corsair HX1000W 
CaseMouseMouse PadAudio
Fractal Define R3 Silver Arrow Razer Naga Ultimate Razer Goliathus Speed Edition Polk Audio RTi-A1 
AudioAudio
Dayton Audio DTA-100a Asus Xonar STX 
  hide details  
Reply
post #37 of 104
Quote:
Originally Posted by TheOcelot;12461260 
LOLOLOLOLOLOL

How many galaxys are there again? If theres 500 million in just ours then there could be infinite amount of planets.

There's several dozen in our "local cluster" of galaxies. That "local cluster" is part of an even bigger "local supercluster" comprised of hundreds of other galaxy clusters. There are literally millions of other superclusters in the observable universe. Our galaxy is like a grain of sand on a beach, and that grain of sand to us seems huge.

I try not to think about it. It makes me feel small.
Edited by Boyboyd - 2/21/11 at 6:20am
post #38 of 104
Quote:
Originally Posted by TheOcelot;12461260 
LOLOLOLOLOLOL

How many galaxys are there again? If theres 500 million in just ours then there could be infinite amount of planets.

500 million is just as far from infinity as zero is.
    
CPUMotherboardGraphicsRAM
Xeon E5645 Asus Rampage II Gene eVGA GTX460 SSC 3x4GB Corsair Dominator PC3-12800 
Hard DriveHard DriveHard DriveOS
Crucial C300 64GB Seagate Momentus XT 750 Western Digital GP 2TB EARS Windows 7 Premium 
MonitorKeyboardPowerCase
Asus VE278Q DSI SMK-88 Seasonic X-660 Lian Li U6B 2011 SE 
MouseMouse Pad
Logitech G500 KAI.g3 HIEN - HARD 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon E5645 Asus Rampage II Gene eVGA GTX460 SSC 3x4GB Corsair Dominator PC3-12800 
Hard DriveHard DriveHard DriveOS
Crucial C300 64GB Seagate Momentus XT 750 Western Digital GP 2TB EARS Windows 7 Premium 
MonitorKeyboardPowerCase
Asus VE278Q DSI SMK-88 Seasonic X-660 Lian Li U6B 2011 SE 
MouseMouse Pad
Logitech G500 KAI.g3 HIEN - HARD 
  hide details  
Reply
post #39 of 104
Quote:
Originally Posted by slipstream808;12463181 
The fact that there is life on earth is nothing short of a miracle. And I do mean that in a scientific sense. And I think it could hold true elsewhere. But life as intelligent as us? That's beyond a miracle. I guess I'm just a huge skeptic on this. I think if intelligent life were out there it would have reached out to us by now. Then again there are just way too many possibilities to consider of what life out there is like.

Ultimately I say we keep hoping and we keep looking.

Ahh, love being the most arrogant, destructive species currently known. Perhaps we are being avoided, like "the plague" so to speak wink.gif
PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87E-ITX ZOTAC GeForce GTX 970 G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR... 
Hard DriveHard DriveCoolingCooling
Toshiba DT01ACA200 OCZ Vertex 460 Swiftech H220-X EK-FC970 GTX Full Cover Water Block 
CoolingOSMonitorPower
Black Ice Nemesis 120GTS Ultra Stealth U-Flow L... Windows 10 BenQ GW Series GW2760HS  Silverstone Tek 450-Watts SFX 
Case
BitFenix Prodigy 
  hide details  
Reply
PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-4670k ASRock Z87E-ITX ZOTAC GeForce GTX 970 G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR... 
Hard DriveHard DriveCoolingCooling
Toshiba DT01ACA200 OCZ Vertex 460 Swiftech H220-X EK-FC970 GTX Full Cover Water Block 
CoolingOSMonitorPower
Black Ice Nemesis 120GTS Ultra Stealth U-Flow L... Windows 10 BenQ GW Series GW2760HS  Silverstone Tek 450-Watts SFX 
Case
BitFenix Prodigy 
  hide details  
Reply
post #40 of 104
Quote:
Originally Posted by slipstream808;12463181 
The fact that there is life on earth is nothing short of a miracle. And I do mean that in a scientific sense. And I think it could hold true elsewhere. But life as intelligent as us? That's beyond a miracle. I guess I'm just a huge skeptic on this. I think if intelligent life were out there it would have reached out to us by now. Then again there are just way too many possibilities to consider of what life out there is like.

Ultimately I say we keep hoping and we keep looking.
Why when we ourselves haven't bean able to reach out except with a satellite. And what's to say that A. Other intelligent life is even up to our level of knowledge. They could still be in the stone age. B. If they are advanced enough to be zipping around the universe in flying saucers, why would they even stop at this backwater planet ruled by apes who can not get along with each other, and do nothing but constantly try to kill each other.

There is by our thought process only 2 reasons to be a space fearing civilization. 1 is to conquer and the other is for knowledge. If aliens haven't come to conquer us and we have nothing to offer intellectually, simply putting it if they are that far past us in advancements what would we have to offer as a peoples? Answer: Nothing
My Borg PC
(16 items)
 
  
CPUMotherboardGraphicsGraphics
i7 950 Asus Rampage III Extrem EVGA 980 EVGA 980 
GraphicsRAMHard DriveOS
EVGA 980 24gb G. Skill Ripjaws series 1TB Seagate Baracuda Win 10 64bit 
KeyboardPowerCaseMouse
Razer Lycosa 1200w antec Antec 1200 Razer Oroborus 
Mouse PadAudio
Razer Vespula Schiit Bifrust Multibit and Vahalla 2 Amp 
  hide details  
Reply
My Borg PC
(16 items)
 
  
CPUMotherboardGraphicsGraphics
i7 950 Asus Rampage III Extrem EVGA 980 EVGA 980 
GraphicsRAMHard DriveOS
EVGA 980 24gb G. Skill Ripjaws series 1TB Seagate Baracuda Win 10 64bit 
KeyboardPowerCaseMouse
Razer Lycosa 1200w antec Antec 1200 Razer Oroborus 
Mouse PadAudio
Razer Vespula Schiit Bifrust Multibit and Vahalla 2 Amp 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Technology and Science News
Overclock.net › Forums › Industry News › Technology and Science News › [io9]Our galaxy is home to more than 50 billion planets…and 500 million habitable one