Posts Tagged ‘space’

Vacation with Saturn and proplyds

I'm in the parking lot of a motel staring at spectacular red and buff cliffs! It's the Kaibab Limestone and the Coconino sandstone and that other red rock formation I forget the name of. Spiky little lizards are playing on the fence next to me.

After a great but exhausting week at ETech and SXSWi, I'm on vacation in Arizona with a rental car and no particular plan. Last night in Sedona we picked up a flyer in the Super8 lobby, for Evening Sky Tours which I pictured as a couple of old retired guys out in a parking lot picking up some spare cash for new lenses by showing off their amateur astronomy knowledge. While this was close to the truth the Adventure was run in a scarily businesslike and professional manner and rather than being a once a week or sporadic deal it was clearly a real job. Three guys pulled up with a trailer or two full of telescopes with a D**'s mount sort of a huge wooden box like a box kite with mirrors stuck in and lenses and spotting scopes stuck on! They had a row of folding chairs with wooly blankets laid out. Reclining lawn chairs would have been more the thing.
The main dude went around in a bossy way reminding his employees the telescope flunkies to "tell 'em what they're lookin' at". It was excellent. They did an especially good job of saying "In Africa" or "In the MIddle East" when talking about the names of stars and the history of astronomical discoveries.

As the Milky Way began to slide into our consciousness we saw a few satellites and every time I wanted to scream "Satellite!!!" Might have done just that. We had out our G1 Skymaps at first but put them away so as not to be assholes. I knew Orion, Taurus, Cassiopeia, the Pleiades, the Big Dipper and North Star, and that is about it. With luck I can spot Cygnus and the Corona Borealis. Zond-7 knew where Sirius was, which impressed me. I guessed where Gemini was, but got it wrong. Then I did what one of the astronomy dudes suggested and learned "Arc to Arcturus" and "Spike to Spica". Now I know a new thing!

The Night Sky Adventure dudes explained what we were looking at very well and were patient and sweet about all the questions. It was a little hard to get them to go into any depth. But it was light years better than going to a planetarium!
Stuff we saw: M51 which is sort of colliding or interacting galaxies, M3 (a globular cluster), M81 and M82 together (they affect each other with tides!), the Beehive Cluster, the Pleiades, a red dwarf star among the Double Cluster,  Mizar A and B and Alcor, (The horse and rider!), Saturn and 5 moons, and a bit of the Orion Nebula where the Trapezium is. We looked at Sirius through a polarized filter to see its spectral lines.

Later, the Wikipedia entry on the Orion Nebula turned out to be incredibly great; hello, iron tipped glowing blue "bullets" of supersonic incandescent gas. It just got more and more extreme and crazy in the descriptions. Keep reading. It gets better and better. Like this:

The green hue was a puzzle for astronomers in the early part of the 20th century because none of the known spectral lines
at that time could explain it. There was some speculation that the
lines were caused by a new element, and the name "nebulium" was coined
for this mysterious material. With better understanding of atomic
physics, however, it was later determined that the green spectra was
caused by a low-probability electron transition in doubly ionized oxygen, a so-called "forbidden transition".

In between lurching up from my wheelchair to peer through telescopes, I kept saying over the things we'd seen, so that I could look them up later. "You must have studied this!" one woman said in amazement. "No…. I'm just repeating to myself what the guy just told us…"

I don't mean this meanly, but I have forgotten how dumb most people are. Or maybe not dumb but just, without the most basic snippets of information about things like what a moon or a constellation or a galaxy is. Compared to our amateur astronomer hosts Zond-7 and I were just a couple of people who grew up liking science magazines and who might read the Planetary Society blog once in a while. But the people around us, holy crap. One lady was asking what it meant for something to be a moon. As we explained (super nicely) she *got it* that moons go around a planet, and planets go around the Sun, and so the moons are also going around the Sun at the same time, but with extra wiggling. I could see her getting it, even in the dark! Zond-7 explained very clearly to someone else what it meant for Saturn to be in Leo (which it was). Earlier, someone else went "Is there a thing called a .. a 'quark'?" and boy howdy did I feel like Mr. Peabody just able to say "It's a tiny elementary particle" Zond-7 asked if she meant quasar, but she meant quarks which were mentioned in a movie she saw. When I hung out with large feral packs of theoretical physicists I noticed how they would speak with disdain of washed-up media whores meaning anyone who ever talked to the press or wrote a popular science article. Meanwhile I wish popular science was more popular and more people would learn how to explain (with strangeness and charm) what a quark is to a regular person.

Anyway, I was struck by how much people don't know. We don't need to know it, people go around and function and are smart as anything, but I forget that most people don't care for some of the things I like to know. And I was struck by the thought that I am used to being around people who do know and who have a fairly huge internal database of random knowledge not applicable to their daily life. The people who came to the astronomy event were self selected to be people who were interested and curious and willing to learn stuff, unlike the general population. I am not trying to be judgmental on people by saying this, it is just that I felt a gulf suddenly between my assumptions about what's in people's heads all around me, and what actually is. Heather Gold at SXSWi in her talk show at Plutopia touched on this rather sweetly when she mentioned the movie Powers of Ten and said "You know, like that thing you do in bed when you're a little kid, where you imagine you're in your address, St. Louis, Missouri, United States, North America, Northern Hemisphere, Earth, The Solar System, Milky Way, like that? … and the crowd just kind of stared at her…. As Heather did, I assumed everyone did that! Did you? But no – not everyone spends hours poring over photographs of galaxies and nebulae and reading encyclopedia articles. I have not felt like a freak for having a lot of book learning for a long time, not for years. As a kid that was a hard lesson – I thought all reasonable people would automatically know what mitochondria were, and so on.
This crowd, the idea of spectral lines was going to be so completely over their heads that it was impossible for the guys to explain anything. I was glad they showed it anyway.

Meanwhile, I don't know the parts of an engine or how to fix a toilet or knit a sweater or take someone's blood pressure as probably the people on our Star Tour do know.

Saturn's moons freaked me out the most. They just hang there. The light reflected from Saturn shades them like our Moon is shaped and shaded by Earthlight. They were more surreal to me than Saturn itself, because they looked so three dimensional.

There is a flythrough of a 3-D model of the Orion Nebula! Can't wait to try it!

When we get home I have a book called Agnotology waiting for me which promises to be about theories of Not Knowing. What don't we know? And why don't we? And how does that affect us?

One last note, Zond-7 asked one of the astronomy dudes how many stars
were in a galaxy and was told a trillion.  He gently drew out the guy a
little more and then shut up. Later in the car he told me that the
trillion stars theory was in the process of being debunked, as it is
based on "a trillion solar masses" but like 99.999 % of that is dark
matter so there are likely not a trillion stars in the galaxy at ALL.
Speaking of Agnotology!

If you are wondering about a proplyd you may go read the article on the Orion Nebula! Happy pointless knowledge voyage!

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