glowing the same bright turquoise, which brings out the iridescence in the metal. The hand looks strong, but…sophisticated is the only word that comes to mind. I think it’s a woman’s hand.
—I am more interested in facts at this point. What is this strong but sophisticated hand made of?
—It proved nearly impossible to cut or otherwise alter by conventional means. It took several attempts to remove even a small sample from one of the wall panels. Mass spectrography showed it to be an alloy of several heavy metals, mostly iridium, with about 10 percent iron and smaller concentrations of osmium, ruthenium, and other metals of the platinum group.
—It must be worth its weight in gold?
—It’s funny you should mention that. It doesn’t weigh as much as it should so I’d say it’s worth a lot more than its weight, in anything.
—How much does it weigh?
—Thirty-two metric tons…I know, it’s a respectable weight, but it’s inexplicably light given its composition. Iridium is one of the densest elements, arguably the densest, and even with some iron content, the hand should easily weigh ten times as much.
—How did you account for that?
—I didn’t. I still can’t. I couldn’t even speculate as to what type of process could be used to achieve this. In truth, the weight didn’t bother me nearly as much as the sheer amount of iridium I was looking at. Iridium is not only one of the densest things you can find, it’s also one of the rarest.
You see, metals of this group—platinum is one of them—love to bond with iron. That’s what most of the iridium on Earth did millions of years ago when the surface was still molten and, because it’s so heavy, it sunk to the core, thousands of miles deep. What little is left in the Earth’s crust is usually mixed with other metals and it takes a complex chemical process to separate them.
—How rare is it in comparison to other metals?
—It’s rare, very rare. Let’s put it this way, if you were to put together all the pure iridium produced on the entire planet in a year, you’d probably end up with no more than a couple metric tons. That’s about a large suitcaseful. It would take decades, using today’s technology, to scrounge up enough to build all this. It’s just too scarce on Earth and there simply aren’t enough chondrites lying around.
—You lost me.
—Sorry. Meteorites; stony ones. Iridium is so rare in Earth rocks that it is often undetectable. Most of the iridium we mine is extracted from fallen meteorites that didn’t completely burn up in the atmosphere. To build this room—and it seems safe to assume that this is not the only thing they would have built—you’d need to find it where there are a lot more than on the Earth’s surface.
—Journey to the center of the Earth?
—Jules Verne is one way to go. To get this type of metal in massive quantities, you’d either have to extract it thousands of miles deep or be able to mine in space. With all due respect to Mr. Verne, we haven’t come close to mining deep enough. The deepest mines we have would look like potholes next to what you’d need. Space seems much more feasible. There are private companies right now hoping to harvest water and precious minerals in space in the very near future, but all these projects are still in the early planning stages. Nonetheless, if you could harvest meteorites in space, you could get a lot more iridium, a whole lot more.
—What else can you tell me?
—That pretty much sums it up. After a few months of looking at this with every piece of equipment known to man, I felt we were getting nowhere. I knew we were asking the wrong questions, but I didn’t know the right ones. I submitted a preliminary report and asked for a leave of absence.
—Refresh my memory. What was the conclusion of that report?
—We didn’t build this.
—Interesting. What was their reaction?
—Request granted.
—That was it?
—Yes. I think they were hoping I wouldn’t come back. I never used the word “alien,” but that’s probably all they took out of my report.
—That is not what you meant?
—Not exactly. There might be a much more down-to-earth explanation, one I just didn’t think of. As a scientist, all I can say is that humans of today do not have the resources, the knowledge, or the technology to build something like this. It’s entirely possible that some ancient civilization’s understanding of metallurgy