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

 

There are probably 1 to 10 billion earthlike planets in the Milky Way

RATE THIS! +13
Posted in Science on 31st Aug, 2015 10:27 PM by AlexMuller

Researchers combine constraints on galaxy formation histories with planet formationmodels, yielding the Earth-like and giant planet formation histories of the Milky Way and the Universe as a whole. In the Hubble Volume, we expect there to be 10^20 Earth like and 10^20 giant planets.

 

Our own galaxy is expected to host 10^9 and 10^10 Earth-like and giant planets, respectively. Proposed metallicity thresholds for planet formation do not significantly affect these numbers. However, the metallicity dependence for giant planets results in later typical formation times and larger host galaxies than for Earth-like planets.

 

The Solar System formed at the median age for existing giant planets in the Milky Way, and consistent with past estimates, formed after 80% of Earth-like planets.

 

However, if existing gas within virialised dark matter haloes continues to collapse and form stars and planets, the Universe will form over 10 times more planets than currently exist.

 

This shows that we could have at least a 92% chance that we are not the only civilisation the Universe will ever have, independent of arguments involving the Drake Equation.


Tags: spaceplanetHubbleastronomyuniversegalaxyMilky WayEarth

Read original article » Back to category

Comments

Author: Guest
Posted: 2015-09-01
+2
Finding many "earth like" planets is far from finding any signs of life and going as far to suggest existence of civilisations is just a provoking statement Reply


 

Recent headlines

  • Posted in Science on 2017-04-28 18:56:10
    Martian Soil Could Be Used to Build a Colony..read more
    Posted in Business on 2017-04-28 18:45:58
    President Trump’s Tax Plan Would Give Alphabet $47B..read more
    Posted in Medicine on 2017-04-28 18:33:57
    Test may spot glaucoma before symptoms begin..read more
    Posted in Science on 2017-04-27 18:20:45
    The Next Journey To Pluto Is Now On Plot..read more
    Posted in Science on 2017-04-27 18:12:13
    Air pollution: 'Heart disease link found'..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