The American Museum of Natural History is planning an exhibit on the future of space exploration. We are promised authentic old equipment, models, a walk-through diorama of the Martian surface, and information on current space probes.

So far, so good.

They are also offering a "full-size recreation of a lunar habitat" (can you recreate things that don't yet exist?) and a model of a space elevator.

That much is on the web page. The museum newsletter, Rotunda, specifies that this hypothetical space elevator would run from the surface of the moon to about 100 miles above Earth's surface. Passengers or cargo would travel that last 100 miles by spaceplane (which presumably could be launched to connect to wherever the cable is hanging at a given time).

The lunar end of the cable is supposed to be at the South Pole, because there's likely to be water there. That a south pole base makes sense doesn't make it a good anchor point for a space elevator. Yes, there's a lot to be said for a base near the most likely source of water, but that doesn't mean it's a good place to anchor a space elevator.

Furthermore, one of the arguments for building this thing is that it would be a way to get Helium-3 to Earth. Yes, space elevators in the service of nuclear fusion.

The article is by the exhibit curator, Michael Shara, who is described as an astrophysicist. A quick google tells me that his work is on things like the dynamics of dwarf stars. Also, the most recent of the "recent publications" that the museum lists for him is from 2000. He may have been studying engineering and materials science in the decade since, and it's possible that the exhibit will talk about the strains that the elevator cables would need to take, but I am not optimistic. That said, I may go, just for the space hardware.
[livejournal.com profile] cattitude and I just had a very pleasant time showing [livejournal.com profile] zorinth around the American Museum of Natural History.

He's in town with [livejournal.com profile] papersky, who is here for the Nebulas. We met them, and [livejournal.com profile] davidlevine, for a quick slice of pizza, then Papersky and David went back to the hotel, and Cattitude, Zorinth, and I took the train uptown.

We started on the fourth floor, because the original plan had been "take Zorinth to AMNH and show him the dinosaurs." The three of us had fun showing each other stuff--Cattitude and I know the museum, but Zorinth was pointing out details of the fossils to us as well as the other way around. At one point, Cattitude asked to borrow the small flashlight that I keep in my daypack, for a closer look at a fossil; it didn't make a huge difference. After two or three halls, Cattitude decided he wasn't entirely well, and headed home; Z and I kept looking at cool things, including the rest of the dinosaurs.

Having nothing specific in mind after dinosaurs, we went downstairs, which led to the Hall of African Mammals. I led him in there to show off the elephants from above, after which we went around the dioramas on the third floor, then those on the second floor (the level the elephants are actually on), with the fine old dioramas. A discussion while in there about whether giraffes were taller than blue whales had included me saying "We could go look," so we stopped in briefly to see the huge model hanging from the wall of the Hall of Fishes (though we skipped the rest of that hall).

We finished up with the Hall of Rocks and Minerals: Faberge miniatures, specimen gold (the fine leafing and branching some nuggets do), then along to the case of fluorescent minerals, which we watched through three cycles of turning the lights on (so we could see the usual look of them) and off (for the fluorescence). And then casually into the adjacent room, where Zorinth of course walked straight ahead and right up to the Star of India. We had fun looking at star sapphires; Zorinth said he especially liked the red one just below the Star of India. And on around the rest of that room, full of gemstones and a rebuilt gem pocket from a topaz mine. And out again, to look at huge pieces of amethyst and azurite, and a stalagmite, and lots of other things both attractive and educational.

It had been years since I actually went all the way around that hall, instead of just showing off the star sapphires to visitors and then stopping by my favorite huge hunk of amethyst. I should do so more often.

As a bonus, the path in and out of the Hall of Gems and Minerals is through the Hall of Human Origins, which has a model of Turkana Boy that I think is new, and a cast of a Homo floresiensis that I know I hadn't seen before.

That was about as much museum as I had in me, so I took Zorinth back downtown, then came home via the grocery store. (I needed vegetables to make fish stock, having bought fish "frames" (bones and some of the usually-less-desirable flesh) for the purpose at the Greenmarket this morning.)
[livejournal.com profile] cattitude and I just had a very pleasant time showing [livejournal.com profile] zorinth around the American Museum of Natural History.

He's in town with [livejournal.com profile] papersky, who is here for the Nebulas. We met them, and [livejournal.com profile] davidlevine, for a quick slice of pizza, then Papersky and David went back to the hotel, and Cattitude, Zorinth, and I took the train uptown.

We started on the fourth floor, because the original plan had been "take Zorinth to AMNH and show him the dinosaurs." The three of us had fun showing each other stuff--Cattitude and I know the museum, but Zorinth was pointing out details of the fossils to us as well as the other way around. At one point, Cattitude asked to borrow the small flashlight that I keep in my daypack, for a closer look at a fossil; it didn't make a huge difference. After two or three halls, Cattitude decided he wasn't entirely well, and headed home; Z and I kept looking at cool things, including the rest of the dinosaurs.

Having nothing specific in mind after dinosaurs, we went downstairs, which led to the Hall of African Mammals. I led him in there to show off the elephants from above, after which we went around the dioramas on the third floor, then those on the second floor (the level the elephants are actually on), with the fine old dioramas. A discussion while in there about whether giraffes were taller than blue whales had included me saying "We could go look," so we stopped in briefly to see the huge model hanging from the wall of the Hall of Fishes (though we skipped the rest of that hall).

We finished up with the Hall of Rocks and Minerals: Faberge miniatures, specimen gold (the fine leafing and branching some nuggets do), then along to the case of fluorescent minerals, which we watched through three cycles of turning the lights on (so we could see the usual look of them) and off (for the fluorescence). And then casually into the adjacent room, where Zorinth of course walked straight ahead and right up to the Star of India. We had fun looking at star sapphires; Zorinth said he especially liked the red one just below the Star of India. And on around the rest of that room, full of gemstones and a rebuilt gem pocket from a topaz mine. And out again, to look at huge pieces of amethyst and azurite, and a stalagmite, and lots of other things both attractive and educational.

It had been years since I actually went all the way around that hall, instead of just showing off the star sapphires to visitors and then stopping by my favorite huge hunk of amethyst. I should do so more often.

As a bonus, the path in and out of the Hall of Gems and Minerals is through the Hall of Human Origins, which has a model of Turkana Boy that I think is new, and a cast of a Homo floresiensis that I know I hadn't seen before.

That was about as much museum as I had in me, so I took Zorinth back downtown, then came home via the grocery store. (I needed vegetables to make fish stock, having bought fish "frames" (bones and some of the usually-less-desirable flesh) for the purpose at the Greenmarket this morning.)
redbird: closeup of me drinking tea, in a friend's kitchen (Default)
( Sep. 4th, 2003 10:27 pm)
I spent most of this afternoon with [livejournal.com profile] livredor, who is delightful company. We wandered around the Museum of Natural History, looking at dinosaurs, extinct mammals, and so on, and had a fine time, despite the docent who insisted on pointing things out despite our lack of interest in talking to him. (Another docent responded very well to my question "I thought they'd found a second species of coelacanth", and admitted that the sign was out of date.) I also got to show off the glass invertebrates, and see the refurbished Hall of Ocean Life, complete with life-size model blue whale. We also discovered that scallops not only use jet propulsion, they hop on their edges: "Clams got legs!"

By then I was in serious need of a cup of tea, so we went back to the apartment that Livredor and her friend Jen are borrowing, had tea, and talked for another couple of hours, then went out and had kosher pizza (with mushrooms, fresh garlic, and fried onions).

[livejournal.com profile] rysmiel, thank you for introducing us.

The morning I'd spent at the gym, then invited myself downtown to eat some of [livejournal.com profile] eleanor's macaroni and cheese.

gym numbers )
redbird: closeup of me drinking tea, in a friend's kitchen (Default)
( Sep. 4th, 2003 10:27 pm)
I spent most of this afternoon with [livejournal.com profile] livredor, who is delightful company. We wandered around the Museum of Natural History, looking at dinosaurs, extinct mammals, and so on, and had a fine time, despite the docent who insisted on pointing things out despite our lack of interest in talking to him. (Another docent responded very well to my question "I thought they'd found a second species of coelacanth", and admitted that the sign was out of date.) I also got to show off the glass invertebrates, and see the refurbished Hall of Ocean Life, complete with life-size model blue whale. We also discovered that scallops not only use jet propulsion, they hop on their edges: "Clams got legs!"

By then I was in serious need of a cup of tea, so we went back to the apartment that Livredor and her friend Jen are borrowing, had tea, and talked for another couple of hours, then went out and had kosher pizza (with mushrooms, fresh garlic, and fried onions).

[livejournal.com profile] rysmiel, thank you for introducing us.

The morning I'd spent at the gym, then invited myself downtown to eat some of [livejournal.com profile] eleanor's macaroni and cheese.

gym numbers )
.

About Me

redbird: closeup of me drinking tea, in a friend's kitchen (Default)
Redbird

Most-used tags

Syndicate

RSS Atom
Powered by Dreamwidth Studios

Style credit

Expand cut tags

No cut tags