Content with the tag: “mono lake”
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Get Your Biology Textbook...and an Eraser!
Geomicrobiologist Felisa Wolfe-Simon, collecting lake-bottom sediments in the shallow waters of Mono Lake in California. Wolfe-Simon cultured the arsenic-utilizing organisms from this hypersaline and highly alkaline environment. Credit: ©2010 Henry Bortman
One of the basic assumptions about life on Earth may be due for a revision thanks to research supported by NASA’s Astrobiology Program. Geomicrobiologist Felisa Wolfe-Simon has discovered a bacterium in California’s Mono Lake that uses arsenic instead of phosphorus in its DNA. Up until now, it was believed that all life required phosphorus as a fundamental piece of the ‘backbone’ that holds DNA together. The discovery of an organism that thrives on otherwise poisonous arsenic broadens our thinking about the possibility of life on other planets, and begs a rewrite of biology textbooks by...Source: [NASA]
December 2, 2010 / Posted by: Aaron Gronstal
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Bringing a Bit of Mars Back Home
Mars sample return – bringing rocks from Mars back to Earth – has been on NASA’s wish list for decades, and work is underway to develop the necessary technology. Recently a group of scientists field-tested a robotic system that can drill into rocks, collect small core samples and store them for later retrieval. The field test included members of the NASA JPL robotics team that developed the coring and caching system, and scientists from AMASE, a NASA-funded group that has explored Mars-analog sites on the Arctic island of Svalbard.Source: [astrobio.net]
November 8, 2010 / Written by: Henry Bortman
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Searching for Alien Life, on Earth
Mono Lake, just east of Yosemite National Park, is a place of bizarre natural beauty. It also boasts one of the highest natural concentrations of arsenic on Earth. The latter fact, says geomicrobiologist Felisa Wolfe-Simon, makes it a good spot to look for alien life. This is why researchers funded by Exobiology and Evolutionary Biology (Exo/Evo) at the NASA Astrobiology Program have been searching the shores of Mono Lake for life whose biological makeup is fundamentally different than that of any known life on Earth.Source: [astrobio.net]
October 5, 2009 / Written by: Henry Bortman
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