Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Research Demonstrates Potential for Liquid Water on Present-Day Mars

22.05.2009
Researchers at the University of Arkansas have shown that salts formed from perchlorates discovered at the Phoenix landing site have the potential to be found in liquid solution under the temperature and pressure conditions on present-day Mars.

Research professor Vincent F. Chevrier and graduate students Jennifer Hanley and Travis S. Altheide report their findings in the current issue of Geophysical Research Letters. Their work provides the first demonstration of a potential stable liquid on present-day Mars in the immediate environment of the lander.

“Under real, observed Martian conditions, you can have a stable liquid,” said Chevrier.

The researchers studied the properties of sodium and magnesium perchlorates, salts detected by the Phoenix lander, under the temperature, pressure and humidity conditions found at the landing site. The discovery of perchlorates on Mars by the Phoenix mission surprised scientists – the compounds are rare on Earth, found mostly in extremely arid environments such as the Atacama Desert in Chile.

The scientists studied the properties of these salts at varying temperatures using the Andromeda Chamber in the W.M. Keck Laboratory for Space Simulation – a chamber that can imitate the pressure and atmospheric conditions found on Mars. They also performed thermodynamic calculations to determine the state of salt and water combinations on the Martian surface and to see if there was any potential for liquid to be found.

The extreme temperatures found on Mars typically lead to either crystallization or evaporation of water, making it difficult to imagine that water could be found in liquid form. However, salts have been shown to lower the freezing point of water – which is why street crews use salt on the roads to melt ice, Hanley said. Some salts, like perchlorates, lower the freezing point substantially. It turns out that the temperature for the liquid phase of magnesium perchlorate – 206 degrees Kelvin – is a temperature found on Mars at the Phoenix landing site. Based on temperature findings from the Phoenix lander, conditions would allow this perchlorate solution to be present in liquid form for a few hours each day during the summer.

“The window for liquid is very small,” Hanley said. Nevertheless, this finding further supports the possibility of finding life on Mars.

“You don’t necessarily need to have a lot of water to have life,” Chevrier said. “But you need liquid water at some point.”

The Arkansas Center for Space and Planetary Sciences is jointly sponsored by the J. William Fulbright College of Sciences and the College of Engineering.

CONTACTS:
Vincent F. Chevrier, research assistant professor
Arkansas Center for Space and Planetary Sciences
479-575-3170, vchevrie@uark.edu
Jennifer Hanley, graduate student
Arkansas Center for Space and Planetary Sciences
jhanley@uark.edu

Melissa Lutz Blouin | Newswise Science News
Further information:
http://www.uark.edu
http://dailyheadlines.uark.edu/

More articles from Earth Sciences:

nachricht Massive impact crater from a kilometer-wide iron meteorite discovered in Greenland
15.11.2018 | Faculty of Science - University of Copenhagen

nachricht The unintended consequences of dams and reservoirs
14.11.2018 | Uppsala University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Purdue cancer identity technology makes it easier to find a tumor's 'address'

16.11.2018 | Health and Medicine

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>