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TODAY’S THEMIS IMAGE: Cydonia Landscape (snicker):

The Cydonia region on Mars straddles the boundary between the bright, dusty, cratered highlands to the southeast and the dark, relatively dust-free, lowland plains to the west. The countless mesas and buttes that cover the region are testament to the former presence of vast layers of material that have been stripped back over the eons leaving the isolated remnants seen in this THEMIS image. Evidence of larger masses of these remnants is visible to the south in the MOLA context image. Note the lobes of ejecta emanating from the large crater in the upper right of the THEMIS image. This style of ejecta is thought to arise when an impact occurs into water or ice-rich material, indicating that at least at the time of the impact such material was present.

IT’S OFFICIAL: NASA has released the first archive of data from Mars Odyssey. The data covers the cruise phase out to Mars and the first six weeks of mapping (up to the end of March).

HOT NEWS: NASA has awarded the first major contracts for nuclear electric rocket engines.

TODAY’S THEMIS IMAGE: Half a crater in western Arabia Terra:

Today’s THEMIS image covers a region in western Arabia Terra, which contains two interesting craters. The eastern floor of the largest crater seen in most of this image is bumpy and ridged in places and relatively smooth in regions. Careful examination shows that this crater floor contains layered material. This is best seen in the lower portion of this crater. The larger of the two craters located to the lower right also contains layered materials.

QUALIFIED SUCCESS: The first shuttle camera made the ride to space today aboard STS-112. Watched it live on one of the NASA feeds.

I’m impressed that the system worked as well as it did, carrying on transmitting just fine all the way to ET jettision and a moment or so after (at least, that’s when our feed stopped). The hazing of the lens was unfortunate, but that’s no big deal as it can be fixed for the next flight. What irks me the most is the ham-handed way NASA handled the camera feed. It was quite irritating that, after all the hype about the camera and the live broadcast and all, NASA kept switching to other cameras. Particularly annoying was the fact that they switched to another camera just a second or two before SRB separation, what should have been the highlight of the flight. And while it was very difficult to make out, they did the same thing at ET jettision, cutting away for a couple of seconds, then coming back as the Orbiter was already separated and moving away. The lens problem was perhaps foreseeable and readily fixable (apparently Nascar handles this sort of camera problem routinely), but the switching around of camera views at critical times was either pure incompetence on the part of the video team or some sort of preemptive ass-covering in case something went wrong with the separations, and either way it’s irritating and a bigger letdown than the hazed lens.

(I still haven’t been able to download the video, thanks to the near-ubiquitous use of java code to spawn popup windows for it. Even disabling my ad filter doesn’t help, this java crap simply does not work with my machine. And yes, I do have an up-to-date browser.)

TODAY’S THEMIS IMAGE: Winter in Hellas Basin (I’m surprised they didn’t call it “Hellas Frozen Over”):

Right now on Mars it is winter in the southern hemisphere. This means that the usually cloudy Hellas Basin is relatively free from clouds. Even though there is little cloud cover, the atmosphere is still much thicker due to the depth of the basin than elsewhere on Mars, making image details not a crisp as when viewed through lesser amounts of atmosphere. In the center of the image are several dark streaks which originate from the side of a higher standing butte. The dark material is likely being eroded from a single layer within the cliff face. Wind has moved some of the eroded dark material to form the streaks.

LAMS IN THE NEWS: Lost amid the excitement over Hurricane Lili last week, the Times-Picayune ran an article on LAMS in the Thursday, October 3 Slidell edition.

The article covers LAMS and the Mars Society in general, and focuses on our chapter having won the Society’s Outstanding Volunteer Award. It includes an interview with LAMS President Craig Dooley, and a photo of Craig receiving the award from Bob Zubrin at the 2002 convention.

TODAY’S THEMIS IMAGE: Impact crater

This scene shows several interesting geologic features associated with impact craters on Mars. The continuous lobes of material that make up the ejecta blanket of the large impact crater are evidence that the crater ejecta were fluidized upon impact of the meteor that formed the crater. Volatiles within the surface mixed with the ejecta upon impact thus creating the fluidized form. Several smaller impact craters are also observed within the ejecta blanket of the larger impact crater giving a relative timing of events. Layering of geologic units is also observed within the large impact crater walls and floor and may represent different compositional units that erode at variable rates. Cliff faces, dissected gullies, and heavily eroded impact craters are observed in the bottom half of the image at the terminus of a flat-topped plateau.

NEW MS BOOK: The Mars Society has now produced a book, collecting together all of the published papers from the 1999-2001 conventions. It should be available at Amazon or local bookstores.

TODAY’S THEMIS IMAGE: Dramatically shaded highlands in Terra Cimmeria:

This image shows the cratered highlands of Terra Cimmeria. The image contains several long troughs of Sirenum Fossae running primarily from left to right. These features are parallel to semi-parallel fractures called graben. In places the fractures postdate crater formation. This is best seen where fractures cut across the ejecta blanket of the large crater near the right center of the image.