News / Science & Technology

Study: Comet Crashes Kick-start Life Across Solar System

2010's Comet McNaught. (NASA)
2010's Comet McNaught. (NASA)
TEXT SIZE - +
Rick Pantaleo
Comets and other celestial travelers carry ingredients that can help kick-start life on planets, according to a team of British and American scientists.

The scientists from Imperial College London, The University of Kent and the U.S. Department of Energy’s Lawrence Livermore National Laboratory say they’ve discovered  a cosmic factory for producing amino acids, which are considered to be the building blocks of life.

According to the researchers, those potential life-producing amino acids are formed when an icy comet smashes into a planet or a rocky meteorite collides with an ice covered planet.

The new findings provide additional clues as to how life began on Earth some 3.8 to 4.5 billion years ago, when our planet was frequently being blasted with comets and meteorites.

"This process demonstrates a very simple mechanism whereby we can go from a mix of simple molecules, such as water and carbon dioxide ice, to a more complicated molecule, such as an amino acid,” said co-author Mark Price from the University of Kent. “This is the first step towards life. The next step is to work out how to go from an amino acid to even more complex molecules such as proteins.”

The researchers found a shock wave is generated when a comet collides with a planet. That shock wave produces the kind of molecules needed to form amino acids.

Enceladus, one of moons of Saturn, as seen by NASA's Cassini spacecraft. (NASA)Enceladus, one of moons of Saturn, as seen by NASA's Cassini spacecraft. (NASA)
x
Enceladus, one of moons of Saturn, as seen by NASA's Cassini spacecraft. (NASA)
Enceladus, one of moons of Saturn, as seen by NASA's Cassini spacecraft. (NASA)
"Our work shows that the basic building blocks of life can be assembled anywhere in the Solar System and perhaps beyond. However, the catch is that these building blocks need the right conditions in order for life to flourish,” said  co-author  Zita Martins from Imperial College London. “Excitingly, our study widens the scope for where these important ingredients may be formed in the Solar System and adds another piece to the puzzle of how life on our planet took root."

To make their findings, the scientists recreated a comet’s collision with a planet by firing projectiles into mixtures of ice that were similar to the composition of a comet. 

They said  the impacts resulted in the production of amino acids like glycine and D and L-alanine.

The research team said that they also thought a couple of distant ice covered moons-- Enceladus, which orbits Saturn, and Europa which circles Jupiter--could both provide perfect settings for producing amino acid when meteorites smash into them.  

The findings could provide support for future missions to the faraway moons to look for signs of life.

You May Like

Analysts Warn of Regional Proxy Conflict in Afghanistan

Analysts warn if Kabul’s neighbors do not start to cooperate, competing desires for influence could deteriorate into a bloody proxy war in the country More

Saudi Intelligence Chief Replaced

Bandar bin Sultan came under criticism for supporting al Qaida, prompting King Abdallah to wrest Syria operations away from him in February, handing them to Interior Minister Prince Mohammed bin Nayef More

Poetry Magazine editor Don Share talks what makes a good poem with VOA's David Byrd

What makes a good poem? And is poetry as viable an art form as it once was? To find out, VOA's David Byrd spoke to Don Share, the editor of Poetry Magazine. More

This forum has been closed.
Comment Sorting
Comments
     
by: James watts from: Toronto, Canada
October 05, 2013 12:02 AM
I do agree with most of the text above. Although the Comet or meteorite would have to smash into an earth like planet that has h2o and a sufficient gravity to keep that water from leaving the atmosphere. As has happened on Mars. Although I do believe in life on other planets, I do think that is not as common as some scientists think. Of course this speculation on my part...

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Google Buys Drone Companyi
|| 0:00:00
...
 
🔇
X
George Putic
April 15, 2014
In its latest purchase of high-tech companies, Google has acquired a manufacturer of solar-powered drones that can stay in the air almost indefinitely, relaying broadband Internet connection to remote areas. It is seen as yet another step in the U.S. based Web giant’s bid to bring Internet to the whole world. VOA’s George Putic reports.
Video

Video Google Buys Drone Company

In its latest purchase of high-tech companies, Google has acquired a manufacturer of solar-powered drones that can stay in the air almost indefinitely, relaying broadband Internet connection to remote areas. It is seen as yet another step in the U.S. based Web giant’s bid to bring Internet to the whole world. VOA’s George Putic reports.
Video

Video Ray Bonneville Sings the Blues and More on New CD

Singer/songwriter Ray Bonneville has released a new CD called “Easy Gone” with music that reflects his musical and personal journey from French-speaking Canada to his current home in Austin,Texas. The eclectic artist’s fan base extends from Texas to various parts of North America and Europe. VOA’s Greg Flakus reports from Austin.
Video

Video Millions Labor in Pakistan's Informal Economy

The World Bank says that in Pakistan, roughly 70 percent work in the so-called informal sector, a part of the economy that is unregulated and untaxed. VOA's Sharon Behn reports from Islamabad on how the informal sector impact's the Pakistani economy.
Video

Video Passover Celebrates Liberation from Bondage

Jewish people around the world are celebrating Passover, a commemoration of their liberation from slavery in Egypt more than 3,300 years ago. According to scripture, God helped the Jews, led by Moses, escape bondage in Egypt and cross the Red Sea into the desert. Zlatica Hoke reports that the story of the Jewish Exodus resonates with other people trying to escape slave-like conditions.
Video

Video Police Pursue Hate Crime Charges Against Kansas Shooting Suspect

Prosecutors are sifting through the evidence in the wake of Sunday’s shootings in a suburb of Kansas City, Missouri that left three people dead. A suspect in the shootings taken into custody is a white supremacist. As VOA’s Kane Farabaugh reports, he was well-known to law enforcement agencies and human rights groups alike.
Video

Video In Eastern Ukraine, Pro-unity Activists Emerge from Shadows

Amid the pro-Russian uprisings in eastern Ukraine, there is a large body of activists who support Ukrainian unity and reject Russian intervention. Their activities have remained largely underground, but they are preparing to take on their pro-Moscow opponents, as Henry Ridgwell reports from the eastern city of Donetsk.
Video

Video Basket Maker’s Skills Have World Reach

A prestigious craft show in the U.S. capital offers one-of-a-kind creations by more than 120 artists working in a variety of media. As VOA’s Julie Taboh reports from Washington, one artist lucky enough to be selected says sharing her skills with women overseas is just as significant.
Video

Video UN Report Urges Speedier Action to Avoid Climate Disaster

A new United Nations report says the world must switch from fossil fuels to cleaner energy sources to control the effects of climate change. The Intergovernmental Panel on Climate Change released the report (Sunday) following a meeting of scientists and government representatives in Berlin. The comprehensive review follows two recent IPCC reports that detail the certainty of climate change, its impacts and in this most recent report what to do about it. VOA’s Rosanne Skirble has the details.
AppleAndroid