NASA Says Hold Off On 'Life On Mars!' Reports | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Most Recent Daily Airborne

Airborne On ANN

Airborne On YouTube/Hi-Def/Mac Friendly

Monday

Airborne 01.26.15

Airborne 01.26.15

Tuesday

Airborne 01.27.15

Airborne 01.27.15

Wednesday

Airborne 01.28.15

Airborne 01.28.15

Thursday

Airborne 01.29.15

Airborne 01.29.15

Friday

Airborne 01.30.15

Airborne 01.30.15

Mon, Aug 04, 2008

NASA Says Hold Off On 'Life On Mars!' Reports

Phoenix Still Analyzing Martian Soil Data

Despite reports last week by a noted aerospace trade journal -- suggesting NASA was very close to revealing that findings from the Phoenix Mars Lander indicated ideal conditions to support carbon-based life -- on Monday the agency said while the final verdict is still out, no one should hold their breath for such an announcement.

Instead, NASA says its scientists are still analyzing results from soil samples delivered several weeks ago to science instruments on NASA's Phoenix Mars Lander to understand the landing site's soil chemistry and mineralogy.

Within the last month, two samples have been analyzed by the Wet Chemistry Lab of the spacecraft's Microscopy, Electrochemistry, and Conductivity Analyzer, or MECA, suggesting one of the soil constituents may be perchlorate, a highly oxidizing substance. The Phoenix team has been waiting for complementary results from the Thermal and Evolved-Gas Analyzer, or TEGA, which also is capable of detecting perchlorate. TEGA is a series of ovens and analyzers that "sniff" vapors released from substances in a sample.

Confirmation of the presence of perchlorate and supporting data is important prior to scientific peer review and subsequent public announcements. The results from Sunday's TEGA experiment, which analyzed a sample taken directly above the ice layer, found no evidence of this compound.

"This is surprising since an earlier TEGA measurement of surface materials was consistent with but not conclusive of the presence of perchlorate," said Peter Smith, Phoenix's principal investigator at the University of Arizona, Tucson.

Scientists at the Phoenix Science Operations Center at the University of Arizona are specifically looking at the data from these instruments to provide information on the composition of Martian soil.

"We are committed to following a rigorous scientific process. While we have not completed our process on these soil samples, we have very interesting intermediate results," said Smith, "Initial MECA analyses suggested Earth-like soil. Further analysis has revealed un-Earthlike aspects of the soil chemistry."

The team also is working to totally exonerate any possibility of the perchlorate readings being influenced by terrestrial sources which may have migrated from the spacecraft, either into samples or into the instrumentation.

"When surprising results are found, we want to review and assure our extensive pre-launch contamination control processes covered this potential," said Barry Goldstein, Phoenix project manager at NASA's Jet Propulsion Laboratory in Pasadena, CA.

Since landing on May 25, Phoenix has been studying Martian soil with MECA's wet chemistry lab, two microscopes and a conductivity probe, TEGA's ovens and two cameras.

MECA's robotic wet chemistry lab studies soluble chemicals in the soil by mixing a soil sample with a water-based solution with several reagents brought from Earth. The inner surface of each cell's beaker has 26 sensors that give information about the acidity or alkalinity and concentrations of elements such as chloride or perchlorate. The beaker also can detect concentrations of magnesium, calcium and potassium, which form salts that are soluble in water.

With continuing results and the spacecraft in good condition, the mission has been extended through September 30. The original prime mission of three months ends in late August. The mission extension adds five weeks to the 90 days of the prime mission.

FMI: www.nasa.gov/phoenix

Advertisement

More News

Citizen Scientists Lead Astronomers To Mystery Objects In Space

'Yellow Balls' Discovered By Volunteers Studying Spitzer Images Sometimes it takes a village to find new and unusual objects in space. Volunteers scanning tens of thousands of star>[...]

Aero-News: Quote Of The Day (02.01.15)

"While this star formed a long time ago, in fact before most of the stars in the Milky Way, we have no indication that any of these planets have now or ever had life on them. At th>[...]

ANN's Daily Aero-Term (02.01.15): Final Approach Fix

Final Approach Fix The fix from which the final approach (IFR) to an airport is executed and which identifies the beginning of the final approach segment. It is designated on Gover>[...]

Air Ambulance Market Size, Vendor Landscape Analyzed In New Report

New Global Air Ambulance Research Report Shows Projected Growth Of Nearly Ten Percent The Global Air Ambulance market is expected to grow at a CAGR (Compound Annual Growth Rate) of>[...]

US Navy Approves F/A-18 IRST System For Production

Long-Range Sensor System Demonstrated Production Readiness On Super Hornet The F/A-18 Super Hornet infrared search and track (IRST) system, developed and integrated by Boeing and L>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2015 Web Development & Design by Pauli Systems, LC