[Tuesday, October 7, 2008] Opportunity has embarked on the next great challenge -- a journey of 12 km southeast to a huge hole in the ground nicknamed "Endeavour Crater." Measuring 22 km from rim to rim.

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[Tuesday, October 7, 2008] Spirit is poised to begin making more "phone calls" to Earth and engineers are preparing to contact Spirit more frequently as a result of improving solar power input on Mars.

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[Tuesday, October 7, 2008] A journey of 7.5 miles began with a partial victory lap around "Victoria Crater," as Opportunity headed south toward enormous "Endeavour Crater." Partway around the circuit, Opportunity passed the 7.5-mile mark of the mission.

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[Tuesday, October 7, 2008] Local planetary geologist Chris Okubo is on a mission to understand the past roles of groundwater and faulting on Mars by studying similar locations on Earth. Okubo works in the Astrogeology Research Program for the USGS in Flagstaff.

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[Wednesday, October 8, 2008] As fall approaches Mars' northern plains, NASA's Phoenix Lander continues to dig into the red planet's soil and deliver samples to its onboard science instruments for analysis.

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[Thursday, October 9, 2008] NASA will host a media teleconference at 3 p.m. EDT, Friday, Oct. 10, to brief reporters after a meeting held by the agency's administrator concerning the Mars Science Laboratory, or MSL. The meeting is to discuss technical and budget issues.

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[Friday, October 10, 2008] Last year, before Ed Weiler came back to NASA Headquarters to be the Associate Administrator for NASA's Science Mission Directorate, an internal cost study was done to see how much SMD overruns every year on its various projects and missions.

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[Monday, October 13, 2008] The crater-counting system that scientists have used since the 1970s to determine the age of large geologic features on Mars will also allow them to date small features, such as riverbeds and lava flows.

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[Monday, October 13, 2008] A six-minute rocket firing on September 30 has put NASA's Mars Odyssey spacecraft on track for a new orbit around the Red Planet.

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[Thursday, October 16, 2008] Thanks to a series of close encounters by ESA's Mars Express spacecraft, the moon looks almost certain to be a 'rubble pile', rather than a single solid object. However, mysteries remain about where the rubble came from.

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[Monday, October 20, 2008] Lockheed Martin recently delivered the backshell for the Mars Science Laboratory (MSL) to NASA's Jet Propulsion Laboratory in Pasadena, Calif.

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[Monday, October 20, 2008] An odd, solitary hill rising part-way down an eroding slope in Mars' north polar layered terrain may be the remnant of a buried impact crater.

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[Wednesday, October 22, 2008] NASA and the Challenger Center for Space Education have partnered to engage students in ongoing activities for one of NASA's concepts for astronaut housing on the moon through a contest to name a habitat in Antarctica.

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[Thursday, October 23, 2008] Opportunity continues traveling south around the rim of "Victoria Crater," stopping for photo shoots at selected locations along the way.

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[Thursday, October 23, 2008] Rover operators will use the data to plan Spirit's first, post-winter drive to adjust the rover's position to keep the solar panels facing the Sun. The move will put the rover in optimum position before solar conjunction.

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[Thursday, October 23, 2008] Rover operators will use the data to plan Spirit's first, post-winter drive to adjust the rover's position to keep the solar panels facing the Sun. The move will put the rover in optimum position before solar conjunction.

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[Sunday, October 26, 2008] A collection of engineers, astronauts and geologists have spent the past week testing out the Small Pressurized Rover in the 11th annual Desert RATS - or Research and Technology Studies -- field tests.

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[Tuesday, October 28, 2008] Like Navajo weavers, scientists use whatever tints they want to create a finished product. Here, brilliant hues show light in the Martian atmosphere that is invisible to humans.

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[Tuesday, October 28, 2008] A striking image from the HiRISE camera on NASA's Mars Reconnaissance Orbiter shows a mound within the area of a trough cutting into Mars' north polar layered deposits. The camera took this image on Sept. 2, 2008.

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[Tuesday, October 28, 2008] NASA's Mars Reconnaissance Orbiter has observed a new category of minerals spread across large regions of Mars. This discovery suggests that liquid water remained on the planet's surface a billion years later than scientists believed.

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[Tuesday, October 28, 2008] In a race against time and the elements, engineers with NASA's Phoenix Mars Lander mission hope to extend the lander's survival by gradually shutting down some of its instruments and heaters, starting today.

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[Wednesday, October 29, 2008] NASA'S Phoenix Mars Lander entered safe mode late yesterday in response to a low-power fault brought on by deteriorating weather conditions.

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[Thursday, October 30, 2008] NASA'S Phoenix Mars Lander, with its solar-electric power shrinking due to shorter daylight hours and a dust storm, did not respond to an orbiter's attempt to communicate with it Wednesday night and Thursday morning.

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