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Latest Thermal and Evolved Gas Analyzer Stories

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2008-07-18 13:10:00

The team operating NASA's Phoenix Mars Lander plans to tell the lander today to do a second, larger test of using a motorized rasp to produce and gather shavings of frozen ground. The planned test is a preparation for putting a similar sample into one of Phoenix's laboratory ovens in coming days. The instrument with the oven, the Thermal and Evolved- Gas Analyzer (TEGA), will be used to check whether the hard layer exposed in a shallow trench is indeed rich in water ice, as scientists...

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2008-07-15 19:20:00

TUCSON, Ariz. -- A powered rasp on the back of the robotic arm scoop of NASA's Phoenix Mars Lander is being tested for the first time on Mars in gathering sample shavings of ice. The lander has used its arm in recent days to clear away loose soil from a subsurface layer of hard-frozen material and create a large enough area to use the motorized rasp in a trench informally named "Snow White." The Phoenix team prepared commands early Tuesday for beginning a series of tests with the rasp later...

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2008-07-10 07:30:00

NASA's Phoenix Mars Lander's science and engineering teams are testing methods to get an icy sample into the Robotic Arm scoop for delivery to the Thermal and Evolved Gas Analyzer (TEGA). Ray Arvidson of Washington University in St. Louis, Phoenix's "dig czar," said the hard Martian surface that Phoenix has reached proved to be a difficult target, comparing the process to scraping a sidewalk. "We have three tools on the scoop to help access ice and icy soil," Arvidson said. "We can scoop...

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2008-07-09 14:03:01

NASA's Phoenix Mars Lander used its Robotic Arm to deliver a second sample of soil for analysis by the spacecraft's wet chemistry laboratory, data received from Phoenix on Sunday night confirmed. Results from testing this sample will be compared in coming days to the results from the first Martian soil analyzed by the wet chemistry laboratory two weeks ago. That laboratory is part of Phoenix's Microscopy, Electrochemistry and Conductivity Analyzer. The main activity on the lander's schedule...

2008-07-04 09:00:12

By AARON MACKEY A historic chemistry test of Mars' arctic surface suggests the red planet is capable of supporting plants and microscopic life, though scientists with the UA-led Phoenix Mars lander were careful to qualify their initial findings Thursday. At the least, though, the test shows that Mars' arctic dirt is a lot like fertile soil in people's backyards and could be well- suited to grow such vegetables as asparagus. Calling it the first-ever wet chemistry test of another...

2008-07-02 18:00:05

The U.S. space agency says the next sample of Martian soil to be analyzed by the Phoenix Mars Lander might be its last. A team of National Aeronautics and Space Administration engineers and scientists who assessed the spacecraft's Thermal and Evolved-Gas Analyzer, or TEGA, after a short circuit was discovered last month has concluded another short circuit could occur when the oven is again used. Since there is no way to assess the probability of another short circuit occurring, we are...

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2008-07-02 14:56:21

The next sample delivered to NASA's Phoenix Mars Lander's Thermal and Evolved-Gas Analyzer (TEGA) will be ice-rich. A team of engineers and scientists assembled to assess TEGA after a short circuit was discovered in the instrument has concluded that another short circuit could occur when the oven is used again. "Since there is no way to assess the probability of another short circuit occurring, we are taking the most conservative approach and treating the next sample to TEGA as possibly our...

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2008-07-01 15:35:27

NASA's Phoenix Mars Lander enlarged the "Snow White" trench and scraped up little piles of icy soil on Saturday, June 28, the 33rd Martian day, or sol, of the mission. Scientists say that the scrapings are ideal for the lander's analytical instruments. The robotic arm on Phoenix used the blade on its scoop to make 50 scrapes in the icy layer buried under subsurface soil. The robotic arm then heaped the scrapings into a few 10- to 20-cubic centimeter piles, or piles each containing between two...

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2008-06-26 19:15:00

NASA's Phoenix Mars Lander performed its first wet chemistry experiment on Martian soil flawlessly yesterday, returning a wealth of data that for Phoenix scientists was like winning the lottery. "We are awash in chemistry data," said Michael Hecht of NASA's Jet Propulsion Laboratory, lead scientist for the Microscopy, Electrochemistry and Conductivity Analyzer, or MECA, instrument on Phoenix. "We're trying to understand what is the chemistry of wet soil on Mars, what's dissolved in it, how...

2008-06-25 21:00:34

To: TECHNOLOGY EDITORS Contact: Dwayne Brown , Headquarters, Washington, +1-202-358- 1726, dwayne.c.brown@nasa.gov, or Guy Webster, Jet Propulsion Laboratory, Pasadena, Calif., +1-818-354-6278, guy.webster@jpl.nasa.gov, both of NASA; or Sara Hammond of University of Arizona, Tucson, +1-520-626-1974, shammond@lpl.arizona.edu TUCSON, Ariz., June 25 /PRNewswire-USNewswire/ -- NASA's Phoenix Mars Lander placed a sample of Martian soil in the spacecraft's wet chemistry laboratory today for...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.