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

Innovation is the specific instrument of entrepreneurship. The act that endows resources with a new capacity to create wealth.

 

Peter Drucker

Evidence that comets could have seeded life on Earth

RATE THIS! +7
Posted in Science on 7th Mar, 2013 04:56 PM by AlexMuller

A new experiment simulating conditions in deep space reveals that the complex building blocks of life could have been created on icy interplanetary dust and then carried to Earth aboard a comet or possibly meteorites, jump-starting life.

 

Chemists from the University of California, Berkeley, and the University of Hawaii, Manoa, showed that conditions in space are capable of creating complex dipeptides — linked pairs of amino acids — that are essential building blocks shared by all living things.

 

These molecules then catalyzed the formation of proteins (polypeptides), enzymes, and even more complex molecules, such as sugars, that are necessary for life.

 

The discovery of complex molecules

 

In an ultra-high vacuum chamber chilled to 10 degrees above absolute zero (10 Kelvin), Seol Kim and Ralf Kaiser of the Hawaiian team simulated an icy snowball in space, including carbon dioxide, ammonia and various hydrocarbons such as methane, ethane and propane. When zapped with high-energy electrons to simulate the cosmic rays in space, the chemicals reacted to form complex, organic compounds, specifically dipeptides, essential to life.

 

At UC Berkeley, UC Berkeley chemists Richard Mathies and Amanda Stockton then analyzed the organic residues through the Mars Organic Analyzer, an instrument that Mathies designed for ultrasensitive detection and identification of small organic molecules in the solar system. The analysis revealed the presence of complex molecules — nine different amino acids and at least two dipeptides — capable of catalyzing biological evolution on earth.

 

While scientists have discovered basic organic molecules, such as amino acids, in numerous meteorites that have fallen to Earth, they have been unable to find the more complex molecular structures that are prerequisites for our planet’s biology. As a result, scientists have always assumed that the really complicated chemistry of life must have originated in Earth’s early oceans.



Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Hardware on 2016-05-31 17:13:10
    After years of struggle, tidal power’s time may have.....read more
    Posted in Science on 2016-05-31 16:54:17
    Space experts say sending humans to Mars worth the risk..read more
    Posted in Science on 2016-05-31 15:53:28
    Baking soda 'sponge' could capture carbon emissions..read more
    Posted in Science on 2016-05-31 15:44:08
    Scientists uncover potential trigger to kill cancer..read more
    Posted in Science on 2016-05-31 15:33:02
    Planet 9 could have once been an exoplanet, stolen by our.....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
    Poverty marks a gene, predicting depression..read more
    Posted by AlexMuller
    Genes linked to effects of mood and stress on longevity.....read more
    Posted by AlexMuller
    Study shows how air pollution fosters heart disease..read more
    Posted by AlexMuller
    Close encounters of a tidal kind could lead to cracks on icy.....read more
    Posted by AlexMuller
    Internet addiction, school burnout feed into each other..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