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 Devils Hole: Ancient Traces of Climate History
24.05.2017 | Universität Innsbruck

nachricht Supercomputing helps researchers understand Earth's interior
23.05.2017 | University of Illinois College of Liberal Arts & Sciences

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>