Navigation Links
New NASA missions to investigate how Mars turned hostile
Date:11/18/2011

tmosphere called solar flares, and eruptions of solar material called coronal mass ejections can all strip away the upper atmosphere of Mars in various ways. "If we figure out how much atmosphere is removed by changes in solar activity, we can extrapolate back to estimate what the isotope ratios should have been billions of years ago. However, if the measurements of the ancient ratios from SAM don't match up, this suggests that we may have to look at other ways the atmosphere could have been lost, such as giant impacts from asteroids," says Mahaffy, who is Principal Investigator for SAM and Instrument Lead for the Neutral Gas and Ion Mass Spectrometer instrument on MAVEN. Some scientists believe giant impacts could have blasted significant amounts of the Martian atmosphere into space.

Also, Curiosity will carry a weather station, which will help the MAVEN team understand how changes in the upper atmosphere are related to changes at the surface. "For example, if the rover detects a dust storm, it may have an effect higher up because of the winds and the gravity waves (the bobbing up and down of a parcel of air) it sets up," says Grebowsky.

"Curiosity will focus on geology and minerals to determine if the environment on Mars in the distant past had the potential to support life," said Mahaffy. "It will be digging in the dirt trying to understand the habitability issue in a place where water may have flowed, where there could have been a lake. Habitability is also the basic theme of MAVEN -- it will be trying to understand from the top down how the atmosphere evolved over time and how it was lost, which ties back to how clement it was early on."


'/>"/>
Contact: Nancy Neal-Jones
nancy.n.jones@nasa.gov
301-286-0039
NASA/Goddard Space Flight Center
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Long-term study shows acid pollution in rain decreased with emissions
2. Individual CO2 emissions decline in old age
3. Run-off, emissions deliver double whammy to coastal marine creatures, UGA study finds
4. Production of biofuel from forests will increase greenhouse emissions
5. Links in the chain: Global carbon emissions and consumption
6. Ionic liquid catalyst helps turn emissions into fuel
7. Steep increase in global CO2 emissions despite reductions by industrialized countries
8. Study finds crop performance matters when evaluating greenhouse gas emissions
9. Wastewater recycling can multiply greenhouse gas emissions
10. Wood products part of winning carbon-emissions equation, researchers say
11. Switch from corn to grass would raise ethanol output, cut emissions
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New NASA missions to investigate how Mars turned hostile
(Date:12/19/2014)... LAS VEGAS , Dec. 18, 2014   LaunchKey ... built for the post-password and Internet of Things era, ... seed funding. The venture round was led by Metamorphic ... Capital, Rimrock Venture Partners, VegasTechFund, and others.  LaunchKey has ...
(Date:12/17/2014)... 2014  HITLAB SM announced today its completion of ... adherence to current U.S. Food and Drug Administration (FDA) ... device and smart phone application trials utilizing the highest ... "HITLAB is determined to improve global healthcare access, quality, ...
(Date:12/17/2014)... 2014  Automation is fundamentally transforming the travel experience and ... Over the past decade, ePassports, biometric readers, and secure ... through border control via eGates and Automated Passport Control ... and land borders across the globe. ...
Breaking Biology News(10 mins):LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2
... of Alberta in Edmonton, Canada have been able to put ... still defies classification. , The findings, published recently in the ... of the creature, named Horolodectes sunae, for the unusual shape ... million years ago, soon after the dinosaurs went extinct, in ...
... sabertooth tiger attack, meant immediate death for the primitive human. ... caused by a car crash, gunshot or fall thanks to ... to do when it survives an injury that would have ... of the time, mechanisms in place to protect people from ...
... the ability of plants to defend themselves by accumulating high ... insects, and that such adaptation potentially echoes in the food ... to deal with high levels of the toxic element. The ... colleagues there and at the University of California, Berkeley, appear ...
Cached Biology News:Researchers give name to ancient mystery creature 2PNAS study reveals why organs fail following massive trauma 2PNAS study reveals why organs fail following massive trauma 3PNAS study reveals why organs fail following massive trauma 4PNAS study reveals why organs fail following massive trauma 5New moth variety disarms plants guarded by selenium 2
(Date:12/24/2014)... , Dec. 24, 2014   BioLife Solutions , Inc. (NASDAQ: ... of proprietary clinical grade hypothermic storage and ... for cells and tissues  ("BioLife" or the "Company"), today ... Stockholders on May 4, 2015 (the "Annual Meeting"). ...
(Date:12/24/2014)... 23, 2014 Earlier this year in a ... of the Adult Stem Cell Technology Center, LLC ( ASCTC ... unique property of adult tissue stem cells. His title ... Important for the Future,” embodied the essence of his message ...
(Date:12/24/2014)... New York (PRWEB) December 23, 2014 According ... the Long Island Affiliate of ITRA Global, the national office ... but steady recovery. This is evidenced by the third ... strong stock market. Low energy costs have held inflation ...
(Date:12/24/2014)... The report expects global cell isolation and expansion market to ... analyzed data about the vital drivers, restraints, trends, opportunities, strategies ... @ http://bit.ly/1yUxy0T , According to the report, the ... an impressive CAGR during near future. It expects this growth ...
Breaking Biology Technology:BioLife Solutions Sets Date for Annual Meeting of Stockholders 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4ITRA Global Reports Long Island Is Out of Sync With The National Office Market 2ITRA Global Reports Long Island Is Out of Sync With The National Office Market 3The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3
... , , , ... Wagner, MD, bariatric surgeon, recently performed the first outpatient single-site laparoscopic gastric ... an affiliate of Surgical Care Affiliates. , , ... , , For single-site surgery, the major ...
... , LA JOLLA, Calif., July ... announced today that it had received a letter from the ... Company that it did not comply with the minimum $10,000,000 ... Rule 5450(b)(1)(A), prior to the expiration of the extension granted ...
... , CHAPEL HILL, N.C., July 20 ... decisions. Now, a large number of bio-pharmaceutical companies control the ... largely on a company,s ability to evolve its MMMR (Managed ... payer-driven environment. , , Best ...
Cached Biology Technology:Surgeon Performs First Single Incision Peri-Umbilical Laparoscopic Surgery in the State of Missouri 2TorreyPines Receives Notice of Delisting from Nasdaq Global Market 2Understanding Managed Markets: Effective Market Research Structures & Activities to Maximize Payer Access & Insights 2