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NASA Scientists Find Evidence of Water in Meteorite, Reviving Debate Over Life on Mars

By Guest PostMarch 5, 2014Scienceallan hills, ancient mars, antarctic research expedition, Antarctica, biogenic evidence, david mckay, everett gibson, Houston, japanese, jet propulsion laboratory, Johnson Space Center, kathie thomas keprta, martian atmospheric gases, martian carbon, martian meteorite, martian samples, nasa scientists, oxygen atoms, yamato 000593, yamato glacier

A team of scientists at NASA’s Johnson Space Center in Houston and the Jet Propulsion Laboratory in Pasadena, Calif., has found evidence of past water movement throughout a Martian meteorite, reviving debate in the scientific community over life on Mars.

In 1996, a group of scientists at Johnson led by David McKay, Everett Gibson and Kathie Thomas-Keprta published an article in Science announcing the discovery of biogenic evidence in the Allan Hills 84001(ALH84001) meteorite. In this new study, Gibson and his colleagues focused on structures deep within a 30-pound (13.7-kilogram) Martian meteorite known as Yamato 000593 (Y000593). The team reports that newly discovered different structures and compositional features within the larger Yamato meteorite suggest biological processes might have been at work on Mars hundreds of millions of years ago. (more…)

CU-Boulder team develops new water splitting technique that could produce hydrogen

By Guest PostAugust 3, 2013Sciencealan weimer, biological engineering, boulder, brian evanko, charles musgrave, christopher muhich, contraction, holy grail, hydrogen, hydrogen molecules, janna martinek, kayla weston, metal oxides, mirror system, new, oxygen, oxygen atoms, produce hydrogen, solar thermal reactor, solar thermal system, sunlight, sustainable hydrogen economy, thermal expansion, university of colorado, water splitting technique, xinhua liang

A University of Colorado Boulder team has developed a radically new technique that uses the power of sunlight to efficiently split water into its components of hydrogen and oxygen, paving the way for the broad use of hydrogen as a clean, green fuel.

The CU-Boulder team has devised a solar-thermal system in which sunlight could be concentrated by a vast array of mirrors onto a single point atop a central tower up to several hundred feet tall. The tower would gather heat generated by the mirror system to roughly 2,500 degrees Fahrenheit (1,350 Celsius), then deliver it into a reactor containing chemical compounds known as metal oxides, said CU-Boulder Professor Alan Weimer, research group leader. (more…)

Etch-a-sketch with Superconductors

By Guest PostAugust 24, 2011Scienceaeppli, bianconi, catalysts, computing technology, copper, elettra synchrotron radiation facility, fractal like structures in superconductors, ibm scientists, lanthanum, london centre for nanotechnology, new generation of electronic devices, oxygen, oxygen atoms, paradigm, rare earth element, rome, sapienza university, shapes in two dimensions, superconductivity, x ray beam

Reporting in Nature Materials this week, researchers from the London Centre for Nanotechnology and the Physics Department of Sapienza University of Rome have discovered a technique to ‘draw’ superconducting shapes using an X-ray beam. This ability to create and control tiny superconducting structures has implications for a completely new generation of electronic devices.

Superconductivity is a special state where a material conducts electricity with no resistance, meaning absolutely zero energy is wasted. (more…)

Sun and Planets Constructed Differently, Analysis from Nasa Mission Suggests

By Guest PostJuly 3, 2011Sciencebernard marty, centre national de la recherche scientifique, dugway, earth, gaseous nebula, genesis mission, george jarzebinski, heavy elements, isotopes, isotopic composition of oxygen, kevin mckeegan, martian, megasims, NASA, neutrons, o 16, oxygen and nitrogen, oxygen atoms, oxygen on mars, Paris, planets, protons, rocky planet, roger wiens, secondary ion mass spectrometer, solar material, solar system, solar wind, sun, utah, utah test and training range, veronika heber

The sun and the solar system’s rocky inner planets, including the Earth, may have formed differently than previously thought, according to UCLA scientists and colleagues analyzing samples returned by NASA’s Genesis mission.

The data from Genesis, which collected material from the solar wind blowing from the sun, reveal differences between the sun and planets with regard to oxygen and nitrogen, two of the most abundant elements in our solar system, the researchers report in two studies in the June 24 issue of the journal Science. And although the differences are slight, the research could help determine how our solar system evolved. (more…)

Tag Archives: oxygen atoms

NASA Scientists Find Evidence of Water in Meteorite, Reviving Debate Over Life on Mars

CU-Boulder team develops new water splitting technique that could produce hydrogen

Etch-a-sketch with Superconductors

Sun and Planets Constructed Differently, Analysis from Nasa Mission Suggests