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To: Orion78
"A couple hundred posts back I stated that Mars Global Surveyor could not discern the lander on the surface. I stand corrected."

No biggie we all do at some point and time. Please forgive my absence in this thread as of late as well. A couple of big jobs coming down the pipe for me along with some intense philisophical debates here kept me distracted.

Gosh it's been a week! Time flies when your having fun. Hey now that we see that they have this kind of resolutional capabilities it would be interesting if they would use them to locate mars express' beagle 2 lander.

I wonder if the ESA is too afraid to look. Spirit is back apparently too and here's an interesting link as well:

http://www.jpl.nasa.gov/releases/2004/46.cfm

Especially interesting excerpt in this article below:

Spirit has also returned microscopic images and Moessbauer spectrometer readings of Adirondack taken the day before the rover developed computer and communication problems on Jan. 22. Both are unprecedented investigations of any rock on another planet. The microscopic images indicate Adirondack is a hard, crystalline rock. "If you had a hammer and whacked that rock, it would ring," Arvidson said. Moessbauer readings allow scientists to determine what types of iron-bearing minerals are in a rock. "What made us extremely happy when we saw the graph for the first time were the small peaks," said Dr. Bodo Bernhardt, a member of the rover science team from the University of Mainz, Germany, which provided the instrument. The peaks large and small in the spectrum reveal that the minerals in Adirondack include olivine, pyroxene and magnetite. That composition is common in volcanic basalt rocks on Earth, said science-team member Dr. Dick Morris of NASA's Johnson Space Center, Houston. In coming days, scientists plan to use Spirit's rock abrasion tool to grind the weathered surface off of a small area on Adirondack to inspect its interior. Later plans include examining a nearby whitish rock, then driving toward a crater nicknamed Bonneville that's about 250 meters (820 feet) away. Researchers will use the rover to search for rocks that may have been excavated from below the surface and tossed outward by the impact that dug the crater. If Spirit can reach the rim, scientists hope to see outcrops in the crater walls.

What would really be interesting is when they return the rat mircoscopic images to determine if any of the olivine is isometric. Of course it would have been preferable if JPL would have at least taken a look at that hole!

527 posted on 02/01/2004 9:42:46 AM PST by AppauledAtAppeasementConservat (An educated fool, in the end, is still a fool.)
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To: Orion78; Bernard Marx; Axenolith
Here is my estimation (piss poor at best) of the dimensions of this hole

Closest thing I have read is that Adirondack is close to 10 feet away so I used that as a basis and tried to make a scaled measurement as you can see in the image below:



I figure that this hole is 1.9 cm x .6 cm. Best estimate I can come up with. Anybody else please weigh in if you got any ideas on the possible dimiensions of this rock.

528 posted on 02/01/2004 11:35:23 AM PST by AppauledAtAppeasementConservat (An educated fool, in the end, is still a fool.)
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