Womens Womens J.Renee. Quilted Multi Color kelvinsi-25538 Color Flats 7 M c885470 - eslomeli.com

Womens Womens J.Renee. Quilted Multi Color kelvinsi-25538 Color Flats 7 M c885470

Mars likely to have enough oxygen to support life: Study

PARIS - Salty water just below the surface of Mars could hold enough oxygen to support the kind of microbial life that emerged and flourished on Earth billions of years ago, researchers reported Monday (Oct 22).

In some locations, the amount of oxygen available could even keep alive a primitive, multicellular animal such as a sponge, they reported in the journal Nature Geosciences.

"We discovered that brines" - water with high concentrations of salt - "on Mars can contain enough oxygen for microbes to breathe," said lead author Vlada Stamenkovic, a theoretical physicist at the Jet Propulsion Laboratory in California.

Pin Up Couture Women's Harlow 01 , Womens Carlos by Carlos Santana Vegas Black Flats 7.5 M , Corkys Women's Sidewalk Slip on Flat , JOAN BOYCE NAVY BLUE RHINESTONE SLIDES SHOES SIZE 8 M - NEW , Cole Haan Pinch Campus Penny Loafers Womens size 8.5 B burgundy , NEW - Hunter Women's Original Canvas Plimsoll Desert Camo Pink Slip On Shoes - 5NEW Anthropologie Farylrobin Open Toe Espadrilles Flats Shoes Size 8.5Dansko Women's Professional Clog Espresso Oiled Size , Sperry Top Siders Anchor Print Bahama 2-Eye Style 9266396 Sz 6m , New Woman shoes Stuart Weitzman brown loafer sz 9N narrow square toe suede SpainSperry Top-Sider Womens Bluefish Washable Boat Shoes size 5.5 M STS90144 , Womens IVANKA TRUMP gold sparkly fabric ballet flats sz. 5 $110 , JOAN BOYCE LEOPARD RHINESTONE SLIDES SHOES SIZE 7 1/2 M - NEWWomens Pointy Toe Rhinestone Bowknot Fur Lined Slip On Mules Flats Shoes FashionWomens Munro American bronze leather ballet flats w/ ruffle shoes sz. 6 N , Women's Suede Sweet Bowknot Square Toe Flat Slip On Moccasin Loafers Shoes US SzWomens Fergie NIB Bleecker Multi Color Flats 5 MSAS Tripad Womens Brown Leather Buckle Mary Jane Comfort Loafers Shoes Size 7.5Sperry Top Sider Laura Zebra Print Pony Hair Women Driving Loafer Size 5.5M 3415 , JOAN BOYCE GRAY RHINESTONE SLIDES SHOES SIZE 6 1/2 W - NEW , Womens Fergie NIB Bleecker Multi Color Flats 8.5 M , Womens Fergie NIB Wish Gray Flats 5.5 M , Easy Spirit Jadee loafer black leather & croco sz 12 Md NEW , Womens Soft Style Corrie Purple Flats 6 M , Retro Womens Round Toe Mary Jane Platform Lolita Buckle Wedge Mid Heel Shoes SZ , Easy Spirit Glassy Women's Slip On, Blue, Size 5.5 , MUNRO AMERICAN brown leather zip up loafers Sz 7 N NEW! , Fashion Womens Patent Leather British Oxfords Flats Shoes Chic Casual LoafersSteve Madden Women's Lynn Sneaker, Grey, Size 8.0

"This fully revolutionises our understanding of the potential for life on Mars, today and in the past," he told AFP.

Up to now, it had been assumed that the trace amounts of oxygen on Mars were insufficient to sustain even microbial life.

"We never thought that oxygen could play a role for life on Mars due to its rarity in the atmosphere, about 0.14 per cent," Stamenkovic said.

By comparison, the life-giving gas makes up 21 per cent of the air we breathe.

On Earth, aerobic - that is, oxygen breathing - life forms evolved together with photosynthesis, which converts CO2 into O2. The gas played a critical role in the emergence of complex life, notable after the so-called Great Oxygenation Event some 2.35 billion years ago.

But our planet also harbours microbes - at the bottom of the ocean, in boiling hot springs - that subsist in environments deprived of oxygen.

"That's why - whenever we thought of life on Mars - we studied the potential for anaerobic life," Stamenkovic.


The new study began with the discovery by Nasa's Curiosity Mars rover of manganese oxides, which are chemical compounds that can only be produced with a lot of oxygen.

Curiosity, along with Mars orbiters, also established the presence of brine deposits, with notable variations in the elements they contained.

A high salt content allows for water to remain liquid - a necessary condition for oxygen to be dissolved - at much lower temperatures, making brines a happy place for microbes.

Depending on the region, season and time of day, temperatures on the Red Planet can vary between minus 195 and 20 deg C.

The researchers devised a first model to describe how oxygen dissolves in salty water at temperatures below freezing.

A second model estimated climate changes on Mars over the last 20 million years, and over the next 10 million years.

Taken together, the calculations showed which regions on the Red Planet are most likely to produce brine-based oxygen, data that could help determine the placement of future probes.

"Oxygen concentrations (on Mars) are orders of magnitude" - several hundred times - "greater than needed by aerobic, or oxygen-breathing - microbes," the study concluded.

NATURALIZER~Brown SUEDE LEATHER UPPER Casual FLAT SHOES~Women's 7.5N , gloria-33 New Fashion Nubuck Slip On Casual Women Flats Women Shoes Red 8.5 , Ladies Rockport Adiprene Burgundy Leather Slip On Shoes SK59715Women's Summer Fashion Slingback Buckle Cork Wedge Sandal Shoes All Size 5 - 10 , CLARKS Clogs Wedges Sandals SWEET GEORGIA Open Toe Womens Shoes Leather Sz 7.5ECCO Womens Sz 40 Oxfords Fashion Sneakers Casual Shoes Beige Leather (A3)JOSEF SEIBEL CORA Mary Jane Brown Green Leather Shoes Sz 37 (BG14) , BCBG Max Azr Stella 7.5M Pony Hair Patent Loafers Flat Shoes Leopard Print NEW , Comfort by Rockport Casual Shoes Womens 8 Grey Gray , Ladies Cole Haan Black tasseled loafer size 9 A ACole Haan Rodeo Tassel Loafers 042, Light Blue, 6 USJournee Collection Womens elina Closed Toe Ankle Strap Mules Blue Size 6.0Skechers Womens Bobs B-Loved Round Toe Loafers Black Size 6.5 ioH3Ladies Down To Earth Leather Slip On Shoes UK Sizes 3-8 F80204 , TRASK Pamela Perf Mule W's 6.5 , Nine West Shoes Heels Slingbacks Textured Heel Peep Toe Black Womens Size 7.5 M , New Womens Skechers Omne Kort Klassix Shoes Style 720 Black 70E dr22683 Skechers Womens EZ Flex 2 A-Game Memory Foam Casual Grey/Coral , Women Merrell Shoes flat Sedona Brown Hiking size 8 Karhu air cushion TorsionPUMA Voltaic 5 Running Shoes, Wht/Purple/Lavender,Womens US 9.5 , 02-1520 Tommy Hilfiger Women's Jolli SIZE 11MKeds Womens Chillax Low Top Slip On Fashion Sneakers Pink Size 6.0 nOsXWomen's propet womens shoes size 9 Bargain Price Athletic Shoes , Women's Puma Star Be Novel In Design FlatsSkechers Women GO WALK Recovery 13514/GYTQ Gray/Turquoise Walking Shoes , Women's Nike Free TR 5 Flyknit Training Shoes NEW Turquoise / Energy , MSRP $120 , New Balance Womens - White Walking Shoes Size 5 (339975)Converse 537080F Womens Chuck Taylor Shoreline Slip Casual Shoe, Navy, Size 5.5 , Brooks GTS 16 Womens Size 8 Teal Silver Athletic Running Shoes DNA , Salomon XA Pro Women's Pearl Grey/Bordeaux/Hot Pink Running Shoe 6M

"Our results do not imply that there is life on Mars," Stamenkovic cautioned. "But they show that the Martian habitability is affected by the potential of dissolved oxygen."

More aboutSpace and cosmos
Purchase this article for republication.
Your daily good stuff - AsiaOne stories delivered straight to your inbox

Womens Womens J.Renee. Quilted Multi Color kelvinsi-25538 Color Flats 7 M c885470 - eslomeli.com

Womens Womens J.Renee. Quilted Multi Color kelvinsi-25538 Color Flats 7 M c885470
By signing up, you agree to our Privacy policy and Terms and Conditions.