News / Science & Technology

Earth and Moon Share Water Source

Volcanic glasses collected during Apollo moon missions during the early 1970s.
Volcanic glasses collected during Apollo moon missions during the early 1970s.
Rosanne Skirble
Water on the moon came from the same source thought to have supplied most of the water on Earth, according to new research published in the journal Science. The common origin offers new insights into how planets formed and evolved.

Scientists have long believed our Moon was formed when a Mars-size planet collided with the Earth 4.5 billion years ago and jettisoned a disk of molten debris into space. The cataclysm would have generated enough heat on the newborn Moon to burn off the elements needed to form water, leaving it bone dry.  

But in a series of papers over the past five years, Brown University geochemist Alberto Saal and his colleagues have been telling another story. Using new instruments, they re-examined samples of lunar rocks collected by astronauts on the Apollo Moon-landing missions in the early 1970s.   

Water on Moon Earth and Moon Share Water Source
Water on Moon Earth and Moon Share Water Sourcei
|| 0:00:00
...
 
🔇
X
                                                                                                                                                                                                                                                                                       
“We found the first evidence (of) the components of water in lunar volcanic rocks. And these volcanic rocks come from the interior of the Moon, therefore the interior of the moon should have the components that will form water.”   

In 2011, they reported that the chemical signatures of water trapped in the ancient lunar rocks matched those found in rocks from the interior of the Earth.   

“Therefore we thought that somehow the water that is in the Moon is related to the water we see on Earth. They have the same type of origin. They came from the same type of reservoir. So the question came up of where the water came from, and how the water got to the Moon,” said Saal.

As much as 98 percent of the water on the young Earth is believed to have come from ice-bearing meteorites - debris from the formation of the solar system that rained down on the still-cooling planet 4.5 billion years ago.

“Essentially the Earth when it formed, formed with water by the coalescence of these very early solid materials that formed from the solar nebulae," said Saal.

Saal believes some of that water was transported with the new Moon during its birth in that cataclysmic collision.

“Somehow, we don’t know how exactly, but somehow part of that water was not completely evaporated into vacuum, but some of that water went to the Moon,” he said.

Saal’s research helps explain how terrestrial planets like Earth, Venus, Mars and Mercury formed. Prior to evidence of water on the Moon, there was no reason to suspect that these planets would have had water when they formed. Saal says while Earth is a dynamic evolving system, the Moon is a fossilized record of our planet’s origins.  
 
“By looking at the Moon and [seeing] that the rocks on the moon have water and that that water looks very similar to Earth that gives us the indication that the water on Earth came very, very early and probably most likely the Earth formed with water,” he said.

Saal plans to analyze more Moon samples to confirm the findings, which may reveal more details about the events that formed the Moon, and its link to early Earth.

You May Like

UN: 1 Million Somalis at Risk of Hunger

Group warns region is in dire need of humanitarian aid, with at least 200,000 children under age of five acutely malnourished as drought hits southern, central part of nation More

Human Rights Groups Allege Supression of Freedoms in Thailand

Thailand’s military, police have suppressed release of independent report assessing human rights in kingdom during first 100 days of latest coup More

Jennifer Lawrence Contacts FBI After Nude Photos Hacked

'Silver Linings Playbook' actress' photos were posted on image-sharing forum 4chan; Federal Bureau of Investigations is looking into matter More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Ukraine Schools Resume Classes, Donate to Government Forcesi
X
September 02, 2014 12:58 PM
A new school year has started in Ukraine but thousands of children in the war-torn east are unable to attend because of ongoing clashes with pro-Russia rebels. In Ukraine's capital, patriotic education has become the norm along with donations to support injured security forces fighting to take back rebel-held areas. VOA's Daniel Schearf reports from Kyiv.
Video

Video Ukraine Schools Resume Classes, Donate to Government Forces

A new school year has started in Ukraine but thousands of children in the war-torn east are unable to attend because of ongoing clashes with pro-Russia rebels. In Ukraine's capital, patriotic education has become the norm along with donations to support injured security forces fighting to take back rebel-held areas. VOA's Daniel Schearf reports from Kyiv.
Video

Video US Detainees Want Negotiators for Freedom in North Korea

The three U.S. detainees held in North Korea were permitted to speak with foreign media Monday. The government of Kim Jong Un restricted the topics of the questions, and the interviews in Pyongyang were limited to five minutes. Each of the men asked Washington to send a representative to Pyongyang to secure his release. VOA’s Carolyn Presutti has our story.
Video

Video Internet, Technology Offer New Tools for Journalists

The Internet and rapidly evolving technology is quickly changing how people receive news and how journalists deliver it. There are now more ways to tell a story than ever before. One school in Los Angeles is teaching the next generation of journalists with the help of a state-of-the-art newsroom. Elizabeth Lee has this report.
Video

Video Turkmen From Amerli Describe Survival of IS Siege

Over the past few weeks, hundreds of Shi'ite Turkmen have fled the town of Amerli seeking refuge in the northern city of Kirkuk. Despite recent military gains after U.S. airstrikes that were coordinated with Iraqi and Kurdish forces, the situation remains dire for Amerli’s residents. Sebastian Meyer went to Kirkuk for VOA to speak to those who managed to escape.
Video

Video West Africa Ebola Vaccine Trials Possible by Early 2015

A U.S. health agency is speeding up clinical trials of a possible vaccine against the deadly Ebola virus that so far has killed more than 1,500 people in West Africa. If successful, the next step would be a larger trial in countries where the outbreak is occurring. VOA's Carol Pearson has more.
Video

Video Survivors Commemorate 70th Anniversary of Nazi Liquidation of Jewish Ghetto

When the German Nazi army occupied the Polish city of Lodz in 1939, it marked the beginning of a long nightmare for the Jewish community that once made up one third of the population. Roughly 200,000 people were forced into the Lodz Ghetto. Less than 7,000 survived. As VOA’s Kane Farabaugh reports, some survivors gathered at the Union League Club in Chicago on the 70th anniversary of the liquidation of the Lodz Ghetto to remember those who suffered at the hands of the Nazi regime.
Video

Video Cost to Raise Child in US Continues to Rise

The cost of raising a child in the United States continues to rise. In its latest annual report, the U.S. Department of Agriculture says middle income families with a child born in 2013 can expect to spend more than $240,000 before that child turns 18. And sending that child to college more than doubles that amount. VOA’s Deborah Block visited with a couple with one child in Alexandria, Virginia, to learn if the report reflects their lifestyle.
Video

Video Chaotic Afghan Vote Recount Threatens Nation’s Future

Afghanistan’s troubled presidential election continues to be rocked by turmoil as an audit of the ballots drags on. The U.N. says the recount will not be completed before September 10. Observers say repeated disputes and delays are threatening the orderly transfer of power and could have dangerous consequences. VOA correspondent Meredith Buel reports.

AppleAndroid