Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

We are all now connected by the Internet, like neurons in a giant brain.

 

Stephen Hawking

 

Life on other planets could be far more widespread

RATE THIS! +35
Posted in Science on 19th Jan, 2014 12:03 AM by AlexMuller

Earth-sized planets can support life at least ten times farther away from stars than previously thought, according to researchers at the University of Aberdeen and the University of St Andrews. A paper published in Planetary and Space Science claims cold rocky planets previously considered uninhabitable may be able to support life beneath the surface.

 
The team challenges the traditional “habitable zone” or “Goldilocks zone”, the area of space around a star that can support life, by taking into consideration life living deep below the ground.
 
The traditional habitable zone is based on the premise that a planet needs to be not too close to its sun but also not too far away for liquid water to persist, rather than boiling or freezing, on the surface, said PhD student Sean McMahon.
 
“But that theory fails to take into account life that can exist beneath a planet’s surface. As you get deeper below a planet’s surface, the temperature increases, and once you get down to a temperature where liquid water can exist, life can exist there too.”
 
The team created a computer model that estimates the temperature below the surface of a planet of a given size, at a given distance from its star.
 
“The deepest known life on Earth is 5.3 km below the surface, but there may well be life even 10 km deep in places on Earth that haven’t yet been drilled. Using our computer model we discovered that the habitable zone for an Earth-like planet orbiting a sun-like star is about three times bigger if we include the top five kilometers below the planet surface.
 
“The model shows that liquid water, and as such life, could survive 5km below the Earth’s surface even if the Earth was three times further away from the sun than it is just now.
 
“If we go deeper, and consider the top 10 km below the Earth’s surface, then the habitable zone for an Earth-like planet is 14 times wider.”
 
The current habitable zone for our solar system extends out as far as Mars, but this re-drawn habitable zone would see the zone extend out further than Jupiter and Saturn. The findings also suggest that many of the so-called “rogue” planets drifting around in complete darkness could actually be habitable.

Tags: spaceexoplanetsalienshabitable zone

Read original article » Back to category

Comments

Author: Guest
Posted: 2014-01-19
+3
The possibility that life can exist below surface should be taken into account, just as these researchers did. The possibility that in future explorations some kind of life forms will be found are increasing- very exciting Reply
Author: Guest
Posted: 2014-01-19
+1
It is reasonable to assume that going below the surface can protect you from a whole host of unpleasant conditions on the surface of many planets. So the subsurface habitable zone may turn out to be very important. Reply
Author: Guest
Posted: 2014-01-19
+2
Perhaps a recent report that on Mars there is water right now should encourage us to look for life there first. Finding further evidence that there is water on Mars would be an enormous boost for exploration and colonisation. Everyone believes that water was there once upon a time but finding it now would be a great resource - we have to wait and see Reply
Author: Guest
Posted: 2015-07-29
+0
BusterXXXLMr. CEO's for higher Bail-Outs did not seem so connivcing in selling the Chamber of Commerce's create more jobs, by creating more unemployed. Get rid of the protection for underaged unemployed, children have the right to work for income, too program. Reply


 

Recent headlines

  • Posted in Hardware on 2017-06-28 15:34:15
    Oneweb building Satellite Facility..read more
    Posted in Science on 2017-06-28 15:29:06
    Algorithms decode complex thoughts from brain scans..read more
    Posted in Business on 2017-06-28 15:23:13
    Hundreds of US mayors endorse switch to 100% renewable.....read more
    Posted in Business on 2017-06-27 12:49:19
    VR content production: How to take advantage of the VR wave ..read more
    Posted in Software on 2017-06-27 12:37:11
    6 Things That Quantum Computers Will Be Incredibly Useful.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Nanoparticle vaccine shows potential as immunotherapy to fight.....read more
    Posted by AlexMuller
    Obesity is top cause of preventable life-years lost, study shows..read more
    Posted by AlexMuller
    Light can be utilized to control gene function..read more
    Posted by AlexMuller
    Brain stimulation restores memory during lapses, research shows..read more
    Posted by AlexMuller
    Wax worm caterpillar will eat plastic shopping bags: New.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me