Troublehalf; Very sorry to hear about about all your health difficulties. I, too, was puzzled by Dr. Grotzinger's sensational-seeming remarks about an historic discovery on Mars, and the subsequent apparent pull back. I tend to give him the benefit of the doubt in all this, now assuming that he is sincere in admitting that he simply got carried away by the moment, when he learned that Curiosity was working as they'd hoped. Perhaps he was also thinking ahead to the historic discoveries he hoped the rover could make. One of his colleagues spoke in a similar vein, saying that Curiosity would not disappoint, and Mars would not disappoint. Dr. Grotzinger was also probably still somewhat amazed that everything had gone so well in delivering a much more complex and capable probe than ever before to the Red Planet, including that remarkable 'sky crane' maneuver.
I seem to vaguely recall the incident of a NASA representative going to the White House, presumably in re Curiosity. Perhaps all the talk of an historic discovery captured Mr. Obama's interest, and he asked to be briefed on the matter. If I were in his place, I'd welcome a brief break from the usual political troubles. I remember how Mr. Clinton was interested in, and even spoke in public about, the discovery, some years back, that there seemed to be fossil bacteria in a meteorite believed to have originated on Mars.
The organic molecules that Curiosity turned up may end up being a much bigger story than it now appears. Some of these were relatively simple chloromethanes, but at least one was somewhat puzzling, and considerably more complex. I haven't heard that they have managed to classify it yet. It may be a chain-like molecule, containing a good deal of carbon; perhaps more than could likely be accounted for by contamination from Earth. Chlorobutane was suspected. This has four carbon atoms at its center, 8 hydrogen atoms, and one chlorine atom, and one bromine atom, attached around the edges. Could this be a hint of Martian biology? Just maybe. The more complex a molecule, the more likely it has something to do with life. If they can confirm the existence of the same or similar material when they drill into solid rock, as they are now poised to do, Earthly contamination will be virtually ruled out, I'm told.
Edited by bison, 05 January 2013 - 07:55 PM.