[Wednesday, October 6, 2010] NASA announced today that the University of Colorado at Boulder-led mission to Mars to investigate how the planet lost much of its atmosphere eons ago has been approved by the space agency to move into the development stage.

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[Friday, October 8, 2010] There are few places on Mars lower than this. On the left of this image, the floor of Melas Chasma sinks nine kilometers below the surrounding plains. New images from ESA's Mars Express highlight the complex history of this enormous Martian canyon.

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[Saturday, October 9, 2010] The Sample Analysis at Mars instrument suite has completed assembly at NASA's Goddard Space Flight Center and is nearly ready for a December delivery to NASA's Jet Propulsion Laboratory where it will be joined to the Curiosity rover.

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[Saturday, October 9, 2010] This is an image of the meteorite that NASA's Mars Exploration Rover Opportunity found and examined in September 2010.

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[Friday, October 15, 2010] Tomorrow, a NASA-sponsored Field Training and Research Program begins at Meteor Crater, Arizona. The field training will be led by Dr. David Kring, a geologist and Senior Staff Scientist at the Lunar and Planetary Institute in Houston, Texas.

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[Sunday, October 17, 2010] The new project manager for the longest-working spacecraft currently active at Mars, NASA's Mars Odyssey, has a long track record himself.

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[Thursday, October 21, 2010] NASA has selected United Launch Services, LLC of Littleton, Colo., to launch the Mars Atmosphere and Volatile Evolution spacecraft known as MAVEN.

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[Friday, October 22, 2010] A newly installed webcam is giving the public an opportunity to watch technicians assemble and test the next NASA Mars rover, one of the most technologically challenging interplanetary missions ever designed.

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[Friday, October 22, 2010] Researchers at the Planetary Science Institute have found a new explanation for how seas and lakes may have once developed on Mars.

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[Thursday, October 28, 2010] The ground where NASA's Mars Exploration Rover Spirit became stuck last year holds evidence that water, perhaps as snow melt, trickled into the subsurface fairly recently and on a continuing basis.

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[Saturday, October 30, 2010] A growing bounty of images from NASA's Mars Reconnaissance Orbiter reveals that the timing of new activity in one type of the enigmatic gullies on Mars implicates carbon-dioxide frost, rather than water, as the agent causing fresh flows of sand.

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[Sunday, October 31, 2010] Light-colored mounds of a mineral deposited on a volcanic cone more than three billion years ago may preserve evidence of one of the most recent habitable microenvironments on Mars.

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