[Wednesday, September 01, 2004] NASA's Mars Exploration Rover Opportunity has resumed using its rock abrasion tool after a pebble fell out that had jammed the tool's rotors two weeks ago.

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[Thursday, September 02, 2004] The commanding of the Mars Express routine science operations through the Payload Operations Service at RAL in the UK is proceeding well, and the corresponding planning is being performed about 10 weeks ahead of the execution of scientific activities.

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[Friday, September 03, 2004] This weekly report from NASA JPL describes the previous week's activites of the Spirt and Opportunity Mars Exploration Rovers.

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[Sunday, September 05, 2004] "Here we use a spatially and spectrally resolved model of the planet Mars to study the detectability of a planet's surface and atmospheric properties from disk-averaged spectra as a function of spectral resolution and wavelength range."

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[Monday, September 06, 2004] "This Congressional Budget Office study assesses the implications that those plans might have for the content and schedule of NASA's future activities as well as the funding that might be needed to execute them. "

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[Wednesday, September 08, 2004] Spacecraft observations of the landing area for one of NASA's two Mars rovers now indicate there likely was an enormous sea or lake covering the region in the past, according to a new University of Colorado at Boulder study.

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[Wednesday, September 08, 2004] This Mars Global Surveyor image of a cratered plain in southern Acidalia Planitia was acquired earlier this week on 5 September 2004. The arrow points to a dust devil observed that day.

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[Thursday, September 09, 2004] "We've passed a major milestone. We successfully tested an integrated Mars life-detection strategy for the first time and showed that if life on Mars resembles life on Earth at all, we'll be able to find even a single-cell."

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[Thursday, September 09, 2004] An 18-day period began a transition into solar conjunction on sol 241, when the Sun partially obscured the communications path between Earth and Mars, making communications sessions unreliable.

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[Thursday, September 09, 2004] A team of Australian astronomers have developed a way of forecasting the weather on Mars -- without putting their toes in space and created beautiful images of our neighbouring planet.

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[Friday, September 10, 2004] This weekly report from NASA JPL describes the previous week's activites of the Spirt and Opportunity Mars Exploration Rovers.

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[Monday, September 13, 2004] Arizona's high desert isn't quite as tough on equipment as the moon or Mars, but few places on Earth can give prototype spacesuits, rovers and science gear a better workout.

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[Monday, September 13, 2004] This overview of "Endurance Crater" traces the path of the Mars Exploration Rover Opportunity from sol 94 (April 29, 2004) to sol 205 (August 21, 2004).

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[Tuesday, September 14, 2004] A new comparison of drainage basins on Mars and Earth reveals fundamental differences in the ways that valleys were formed in the different environments.

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[Monday, September 20, 2004] Recent analyses of ESA's Mars Express data reveal that concentrations of water vapour and methane in the atmosphere of Mars significantly overlap. This result provides important new hints to evaluate the hypothesis of present life on the Red Planet.

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[Tuesday, September 21, 2004] As NASA's Spirit and Opportunity rovers resumed reliable contact with Earth, after a period when Mars passed nearly behind the Sun, the space agency extended funding for an additional six months of rover operations, as long as they keep working.

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[Friday, September 24, 2004] A dedicated team of scientists is spending the next four weeks in northern Chile's Atacama Desert. They are studying the scarce life that exists there and, in the process, helping NASA learn more about how primitive life forms could exist on Mars.

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[Monday, September 27, 2004] Recent results from the ASPERA-3 instrument on board Mars Express confirm that a very efficient process is at work in the Martian atmosphere which could explain the loss of water.

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[Monday, September 27, 2004] NASA's Mars Global Surveyor, starting its third mission extension this week after seven years of orbiting Mars, is using an innovative technique to capture pictures even sharper than most of the more than 170,000 it has already produced.

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[Wednesday, September 29, 2004] The futuristic drilling rig, under development at NASA's Johnson Space Center, is designed for use on the moon or on Mars. It is being tested, in conditions in some ways similar to Mars, through Oct. 3, at the Eureka Weather Station in the high Arctic.

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