Kathyn—
Sorry I haven't written. You know how crazy it gets right before Christmas break and then I went with Mike on his version of the Grand Tour of the "real moon." It was a different view of the moon than the tour package I took with Fred.
Mike had rented a flyer. It's a special type of leapfrog. Leapfrogs are these vehicles which sort of jump over the lunar landscape. They don't have wheels, but rather have these weird legs. They are hinged in the middle. The vehicle walks on these four legs with a swaying gait like a camel. Then it stops and the legs fold down for you to enter. This one also has onboard jets (powered by compressed air) which enables it to fly short distances. But mostly, the vehicle travels in long leaps. It's not as bad as it sounds. The shock absorbers are perfect so you don't feel the bump of landing and the leaps are several hundred meters so it's more like flying anyway.
The model Mike got didn't have a docking mechanism So,I had to wear a moon suit to walk to the beast. Those things are pretty hot even with the air conditioning in them. Amazingly enough they don't look much different than the primitive Apollo astronauts wore. But inside everything is different. It carries no on board oxygen aside from a small emergency reserve. Scrubbers turn carbon dioxide back into oxygen. Small packs of nutrients and water are placed where a push of a button can serve you lunch if stranded. And the skin of the suit is woven from a superstrong 'thread' made from a special crystal manufactured here on the moon in the high-vac low g manufacturing unit.
It seemed like a lot of stuff, just to walk from the airlock to the leapfrog. When I got in and the cabin repressurized. I was glad to touch the unzip switch and watch it fall off in three pieces.
Our first stop was the arboretum just outside the city. It sat on top of the ground, a huge superhardened concrete dome with anti-meteorite lasers ringing the perimeter. The dome is nearly 300 meters tall and 1000 meters in diameter, making it the largest domed structure made by human hands. We could drive the leapfrog (whom he had named "leaping lena" by this time) directly into a huge airlock. We were met by Hareem Kincaid the director of the arboretum. Apparently, Mike had worked with him in the past. Maybe it was that stuff he couldn't talk about. According to Hareem, the arboretum makes lunar colonization possible. The trees help scrub the air, clean out carbon dioxide and change it into oxygen. "Nature's scrubbers" he called them.
As the doors opened to the arboretum I felt like I was stepping into Muir woods. It was filled with dwarf redwoods, oak, pine, some odd looking trees apparently from the rainforests of the amazon. Such a profusion of different types of trees probably exists no where like this on earth. The air was so humid. I wasn't sure if that was an effect of the trees or if the arboretum was kept that way on purpose. And I was just so amazed at walking through a forest on the moon, that I didn't think to ask. We spent several hours walking through the trails and enjoying the quiet. We saw technicians and researchers. We also saw the odd tourist. We saw an older couple walking hand in hand through the woods. They were so precious. There were a few clearings with picnic tables. Mike arranged for us to have an old time picnic, unfortunately complete with ants and flies. Apparently the insects are an essential part of the ecosystem and the trees need them. I'm just not sure the potato salad did.
Our next stop was an agricultural colony. It looked like the Central Valley, acre after acre of fruit, produce, you name it. The dome had 15 "floors" and 10 sections per floor. Each was devoted to a different type of produce. It was hard to resist the fruit stands, but we wouldn't be back home for a couple of days. I did however, pick up a bottle of honey, and some boysenberry jam.
Oddly, I think the most interesting place on our trip was the dirt mine. You wouldn't think that dirt had any commercial value, but on the moon it does. Lunar soil is rich in certain minerals and all it needs is water to make it good for planting. I stood on the side of a huge pit watching as remote controlled "steam shovels" dug out a ton of dirt and dropped it into a canister. The process was so well controlled that there was hardly even any dust.
The canisters sat on robot carts and once filled drive themselves to the processor. The dirt is dumped on the processor and is shaken. The rocks and gravel are separated from the soil. The rocks are sent to be processed into concrete and the soil is poured into a shipping canister. The canister is sealed and then sent to the mass driver.
The mass driver is the most amazing thing. It's like one of those old fashioned rocket sleds you see in the history books. The canister is placed on this sled and accelerated to ____ KPH which is the escape velocity of the moon. It is precisely aimed at Oneill colony and without any friction to slow it down the canister continues to fly for two weeks until it approaches oneil. Then small water powered jets slow it down and a net like device catches it.
A mass driver like this, but with enhanced security features is used to send Conradium to Oneil for transshipment to earth and mars.
I had mixed feelings when we visited the Skywatch facility. It's a fascinating place, but it was Juan's baby. Since the late 1900's people have worried about an asteroid or huge meteor hitting Earth causing an ELE meaning extinction level event. I've often wondered if Wormwood of the Bible isn't a meteorite. The idea is to scan the heavens with powerful telescopes outside of earth's atmosphere and track asteroids, comets and large meteors. If one is found, then a probe is launched from the moon to survey it and a beacon is set on it to track it. If one is ever found that poses a credible threat to the earth, a mission will be launched from the moon to attach a propulsion unit to the object and nudge it in a different direction. Juan's job was to work out what it would take to nudge an asteroid of a given size into a given orbit over a given period of time. In other words duplicate his work on Oniell station, but not as an experiment.
While there, I saw one of my students. He is an astromechanics major and he took my 20th century English lit class to kill off a general ed requirement, but he did enjoy reading some of the old science fiction stories and nit-picking the science in them. I encouraged him to write his term paper on "Science and Science Fiction." Hey, anything to get them to read.
We finished our tour by visiting the water mines at the pole. Like our friend at the arboretum, the director of the water mine told us that life would be impossible on the moon if it wasn't for the water mines. I would have to agree. Historically, what prevented the establishment of colonies in space was the absence of water. When the international lunar exploration teams in 2021 found subterranean blocks of ice, the possibility of long term survival on the moon went up. Turned out that there were billions of hectacres of water under the surface.
"You're probably thinking that all the water you need gets recycled," Martin Kwandi said as he paced on a catwalk over the "ice cave" as he called it. "It is true that 9 liters out of every 10 used is reclaimed. But that means you are losing one liter out of ten per day. That needs to be replaced. Additionally, those maneuvering jets on the mass driver canisters, what are they powered by – water. If we didn't have this water, we would be dead. What people don't realize, though is that it is a finite resource. We can't waste it. Personally, I think shooting it off into space is a travesty. They should figure out something else. But they won't concede to that until we are down to our last milliliter of water. Then where do we go Earth? Mars?"
He made a good point, but I was somewhat encouraged when he added that there was enough ice in his mine alone to supply the entire moon for 500 years at the current rate of growth.
On our way home, I did prevail on Mike to stop by the ag colony where I bought grapes, oranges, apples some plums and peaches. He felt it was silly since these are the same fruits we have in the stores, but you and I know that the best fruit is that which was on the vine yesterday and not two days ago.
All in all it was an informative trip. Watching them mine water wasn't as awe inspiring as the view from the mountain top ________ resort, but as Mike would put it, it was more real. I wish we had time to visit the manufacturing facilities over on the farside, but I wanted to be back by Christmas eve.
It was nice meeting the working folk. I grew up working class. My dad sliced through tree trunks with a lasersaw for 30 years. He saved his money to put me through college so I wouldn't have to do that. I called him and those like him, the hidden heros. They go to work every day and do the hard jobs, the dirty jobs, the rough jobs so that the rest of us can have the manufactured goods and nice living conditions.
Well, it's been a long trip and I'm tired, but I wanted to get it all down before I forgot it. Have a good Christmas. I'll holo Christmas eve.
Carolyn
