Astronomy


Aware of the classical morphology of angelic beings (” … each of them had six wings: with two they covered their faces, with two they covered their feet, and with two they hovered.” (Isa 6:2)) I still like the spread of holiday spirit with this image above, making the rounds of the astroblogs today. A more scientific explanation:

The bipolar star-forming region, called Sharpless 2-106, or S106 for short, looks like a soaring, celestial snow angel. The outstretched “wings” of the nebula record the contrasting imprint of heat and motion against the backdrop of a colder medium. Twin lobes of super-hot gas, glowing blue in this image, stretch outward from the central star. This hot gas creates the “wings” of our angel. A ring of dust and gas orbiting the star acts like a belt, cinching the expanding nebula into an “hourglass” shape.

Image Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

I haven’t posted any astronomical eye candy lately. It’s not that the internet world is lacking in such stuff. I really like this “movie” showing the rotation of the solar system’s largest planet. Would you believe scientists still don’t know what colors Jupiter’s clouds? Are they gases? Are they aerosols–the suspension of fine particles in the gas? We know Jupiter is almost all hydrogen and helium–two colorless substances. Small impurities in those two gases are responsible for the reds and browns, and the hints of orange and blue. I wonder what they are.

By the way, I thoroughly recommend putting the Astronomy Picture of the Day site on your browser’s favorites. It’s one of the first things I check when I get online in the morning.

Nice story from Reuters on Russian plans to colonize lunar lava caves. They would likely provide significant shielding from the sleet of solar radiation that pummels these airless (or nearly airless) bodies. All explorers need do is seal them up with a skylight, and they’re good to colonize.

The Universe Today site had a post on lunar caves last year. Above is an oblique view (image credit: NASA/GSFC/Arizona State University) in the Marius Hills, which would likely have been an Apollo 18, 19 or 20 landing site had the program not halted with the 17th mission. Wouldn’t that have been amazing for 1973? Discovering a lava cave on the moon.

H. G. Wells wrote all about it over a century ago. We should’ve been listening to him, though I doubt we’ll find lunar life in those caves. Probably a lot of very fascinating geology.

When I was a boy, I loved this film adaptation.

C. S. Lewis was impressed with his countryman’s original.

Getting back to the caves, it might be fascinating to explore these. Possible that water (or ice) might be found in the depths of the moon. A lunar base, let alone a colony, would be a massive undertaking. But finding resources in the caves that could sustain human life would be a big plus.

An obscure text, but a beautiful and thoughtful one:

The beauty of the heavens and the glory of the stars,
a shining ornament in the heights of God.
By the LORD’s command the moon keeps its appointed place,
and does not fade as the stars keep watch.

The Spitzer Space Telescope image above is M27, the Dumbbell Nebula. Credit: NASA/JPL-Caltech/Harvard-Smithsonian CfA

On the occasion of the seven-thousandth post on Catholic Sensibility, I’d like to muse a bit. Looking back and looking forward.

I really appreciate you readers, especially those who comment to be supportive or challenging. I cannot foresee running a blog without comment boxes, and I’m pleased we’ve been able to have great discussions over the years. So thanks to you all: regulars and occasional visitors and one-time guests.

I resisted starting a blog for a few years. Back in 2003, I thought I had missed the golden years of blogging. I wasn’t sure I wanted to try to squeeze in after a few dozen months of commenting on conservative Catholic sites. They were mostly sincere Catholics just trying to find their way in the world of terrorism-come-home and bishops-asleep-at-the-wheel. I had a life outside the internet. I didn’t want to be consumed by what I saw (and still see) as the inherent narcissism of this medium. I do appreciate my blogging companions, especially the ones that challenged me. Thanks for keeping me sharp. Really.

In the almost-eight years of this blog, we’ve experienced many momentous events in Catholicism: a new pope, a contentious 2008 American election, some high profile deaths and funerals, and the ongoing Catholic angst about abortion, homosexuality, and euthanasia. Plus federal politics, the economy, the nature of cooperation with evil, and the ongoing experience of sorting how to be a Catholic in an online age.

As for this site, I’m pleased that we’ve managed to post and discuss the entire published content of the Vatican II documents–a feat unparalleled in the blogosphere. We’re well on our way to completing an overview of the post-conciliar liturgy corpus, including all of the major sacramental rites. Nobody else has even scratched the surface, and I confess I do feel proud to have amassed, with your help, a significant chunk of Catholic history and liturgy. The object has been to conduct this examination like a parish adult-ed series would be done: present the texts and share insights, observations, opinions, and good practices. A lot of bloggers fashion themselves as catechetical experts. I do not. But I also don’t shy away from information. This will continue to be a focus of this site for the foreseeable future.

If you’ve been following every post, I don’t have a degree or certificate to offer you. Just consider yourself well informed.

Speaking of that future, who knows what the next thousand posts will bring. We’ll finally get around to tackling the GIRM. Redemptionis Sacramentum. The liturgical publications of Pope John Paul II. USCCB documents on music and art. The rites dedicating a church. I’m considering setting aside liturgy after Liturgiam Authenticam and tackling the General Catechetical Directory. Or maybe running that in parallel to another liturgy document. It’s been some time since Neil and I cracked the 100-post a month bar. Would two documents at a time be too much?

But a blog wouldn’t feel like a real blog without comments. Hold the praise, please, but simply suggest what topics you would like to discuss here.

Oh, and the image above? It’s the North American Nebula, otherwise known as NGC 7000. It was captured by the Spitzer Space Telescope, credit: NASA/JPL-Caltech. You wouldn’t expect a momentous post on this blog without touching on astronomy, would you?

When I was on retreat this past June, I had a few nice evenings on the retreat grounds doing something I hadn’t done since I was a boy. About a half-hour before sunset, when the sun has dipped below the western trees, I spread a groundcloth and blanket. Making sure I was away from any large tree, and fortified with bug repellent, I reclined on my back and waited for the stars to come out.

Being on retreat, I had a Bible and journal. So I prayed and wrote while the light was still good. While the sun is still up, or shortly after sunset you have a prayer of seeing a star in the daylight sky. Even then, it’s likely the planet Venus with an extraordinarily sharp pair of eyes (and the knowledge of where to look).

Usually with astronomy, one thinks a telescope is necessary for real fun. And to be sure, a telescope allows the observer to go deep into the sky.

Binoculars and a handy star guide are nice. You can see a lot of interesting sights with a decent pair of binocs.

But at the end of June, it was most peaceful and enjoyable to have the sky, the emerging stars, and the quiet buzz of earthling insects. No magnifying devices at all. Just a pair of eyes, and my memory on where to find the first stars and when I would see them against the serene and darkening blue background.

Stars appear first well above the horizon, away from the glare of the sunset and city lights. And the brightest ones, of course. Arcturus, the brightest northern star, was the first to come out. Then Vega within a minute or two. The sky deepened in blue, and a handful of scattered stars soon followed: Altair and Deneb near Vega. Spica just past Arcturus. Saturn toward the west–the only planet I noticed. Last up of the First Magnitude stars, Regulus in the west and Antares in the south.

About ten to twenty minutes later, the constellations emerge around and between those bright stars. If you can last an hour or two, and are far enough into the country, the stars that continue to come into view fill up the sky. As a city boy, my first reconoitering of the dark skies of summer Scout camp were almost overwhelming–too many stars it seemed.

I’ll have to take some time to do this again soon.

The last surviving Martian rover, Opportunity, is still roving. I find this mission to be simply amazing. Martian day 2681 on a mission expected to last just ninety. It’s almost silly. Except that it’s Mars–and Mars is definitely not the stuff of silly.

I used to surf to the official site regularly, but the excess of success has even produced an inner yawn in me. A couple thousand days past expectations–what’s another year?

Read the legacy of the Spirit rover here.

 

Retrograde motion–the observation that Mars, Jupiter, and Saturn occasionally backtrack in their movement against the background stars–was an early problem for the theory (simply illustrated above where the Earth is the red dot in the middle) that the Earth was the center of the universe. The problem could be solved if each planet was on its own sub-track, an epicycle. The planet and its little circle would continue on its way around the Earth. But when it was tracking in the opposite direction from its usual motion, Ptolemy and other ancient astronomers claimed it was just because epicycle movement “backward” overcame its usual progress in the heavens. This web site illustrates it extremely well.

In the decades before and after 1600, Nicolaus Copernicus and Johannes Kepler, had a simpler explanation: no epicycles, and all the planets orbit the sun, and the various subtleties of their apparent motion can be explained–and predicted–mathematically. (Galileo, of course, found moons orbiting Jupiter just as the ancients correctly surmised that the moon orbits the Earth. That finding helped move along the eventual acceptance of his fellow scientists’ insights.

What do these guys have to do with clergy sexual abuse and its cover-up by the bishops? I liken the Jay Study and recent commentary on it to the situation of medieval astronomy, before Copernicus, Kepler, and Galileo. Like the ancients we see the planets move through the sky. Also like the ancients we also misdiagnose what we see. The smart ones among us invent contrived explanations (loneliness, homosexuality, the 60′s) for what we witness among people who should be paragons of holiness and virtue.

At the recent dotCommonweal thread I commented on the Frawley-O’Dea assessment of the Jay study. It strikes me many Catholics aren’t completely satisfied with seeing epicycles explain clergy abuse and bishops covering up. There should be a simpler, yet more subtle explanation here. It’s more than the 60′s. It’s more than loneliness. It’s more than a loss of a sense of sin, or homosexuality, or seductive teens. Certainly, one priest (at least) lost his way in the 60′s, one gay priest happened to abuse children, some adolescent somewhere has seduced a priest, some lonely guy turned to child porn and a real kid, and maybe all of them sinned in spite of “knowing” the right and the wrong of it all.

But it doesn’t explain why twenty, thirty, fifty percent or more of bishops covered it up. It doesn’t explain why significantly large numbers of priests preyed on children.

My own sense–and you longtime readers here know this is my soapbox–is that sex abuse and its institutional cover-up has a strong whiff of addiction. Maybe you can explain abusive clergy as lonely guys pining away for self-satisfaction, but what about bishops? I wouldn’t be naive enough to think every instance of abuse and cover-up can be explained away by sexual addiction and codependency. But at the very least, persons expert in addiction should be consulted in any serious study.

We know that the demands of ministry–and I speak of both laity and clergy–are prime environments for many of us to gain weight (my hand is up), indulge in alcohol or drugs, have affairs or be tempted by sex, or act out emotionally through anger, controlling behaviors, intimidation, passive aggressiveness, etc..

Speaking for myself, I didn’t become forty pounds overweight because parishioners were too demanding, or the priest was unfair, or because I didn’t get the down time I wanted. Or that I was lonely. Or that the meanies in the culturewar were bugging me.

I have to concede I have a predilection to addictive behavior. I have to watch myself carefully. With God’s help, I will never be overweight again. But I can own up to the situation for what it is, and I don’t have to blame the fast food industry, promoters of HFCS, my family of origin, or the time demands of parish liturgy.

Getting back to the Church’s crisis, sexual abuse in many cases may be a result of an addictive inclination, immaturity, emotional upheaval, and a lack of support for a healthy lifestyle that combine in various ways to subvert vulnerable people. The assessment from Jay and other researchers that it is hard to predict who will be an abuser indicates multiple possible factors. That leads me to think this whole mess is something a lot closer to how and why people become addicts. One simple system. A host of subtleties we scarcely understand.

This tack should be more seriously examined. And until future studies include experts in addiction as part of the task force, I will read future work on this with a dollop of doubt–at least in terms of grasping the whole picture.

The Jay Study strikes me as akin to primitive science. Ptolemy’s epicycles explained planetary motion, but in a somewhat contorted way. It wasn’t until Copernicus forwarded the notion that the planets orbited the sun–not Earth, and Kepler refined laws of planetary orbits, that the intricacies of what we observed in the skies was largely and logically explained.

I think we’re in a similar situation today. We’re about as advanced in the understanding of sex abuse and cover-up as medieval astronomers were in their field. There are reasons why clergy abuse and their bishops cover up. We just don’t grasp the whole picture yet. My hope is that the Copernicus and Galileo and Kepler of psychopathology has been born already and somewhere is piecing together the strands of this. If not, I fear we’re going to continue to languish in the Dark Ages, to the detriment of the Gospel itself.

Pluto may have been demoted from planet-status, but it ranks fifth in the solar system with a respectable four moons. The latest was found with the Hubble Space Telescope this summer. This image (credit: NASA, ESA, and M. Showalter (SETI institute)) combines frames taken five days apart, and includes a swath of sky intentionally dimmed so Pluto and it’s big companion don’t hide the little ones in glare:

Little P4 will need a name soon, likely something Roman/Greek associated with the mythical underworld. Maybe Cerberus, the three-headed guard dog.

Wave the checkered flag for the solar system’s eighth planet. Since its 1846 discovery by a combination of mathematics and international cooperation, Neptune has completed one orbit of the sun, as of yesterday.

Two informative posts are up at Universe Today mark the occasion. One gives a luscious Voyager 2 view of the planet, plus a map so you can find it in the constellation of Aquarius. The Hubble Space Telescope turned its viewing eyes to the planet last month.

At magnitude 8, Neptune is about as bright as Saturn’s moon Titan. That’s good enough for a good pair of binoculars. Any decent telescope will be adequate. But alas, our backyard magnifying mechanisms aren’t good enough to resolve a disk with dark and light storms. Think of yourself as doing well by noting the blue color reflected away by methane (natural gas) in the Neptunian atmosphere.

One of my favorite images is Ted Stryk’s reprocessing of four Voyager shots that show the small moon Despina’s shadow on the planet.

Thom Patterson at CNN blogs on “The surprising history of prayer in space.”

I’m rather partial to Al Shepard’s utterance.

The most famous Scripture reading from space is mentioned:

Christmas Eve, 1968: The crew of Apollo 8, the first humans to orbit the moon, read from the Bible’s book of Genesis during a live TV broadcast to Earth. Later, an atheist activist sues NASA over an alleged violation of separation of church and state. The U.S. Supreme Court refuses to hear the case “for want of jurisdiction.”

Lack of jurisdiction, indeed. Perhaps they should consult the Orlando diocese on that.

Don’t look now, but the Whirlpool Galaxy near the Big Dipper has just experienced its third sighted supernova in seventeen years. Today’s Astronomy Picture of the Day shows us before and after.

Three supernovas in 17 years is a lot for single galaxy, and reasons for the supernova surge in M51 are being debated.

Debate? Not needed. What about lucky circumstances for us viewers? If we were watching this galaxy from edge-on (as with this one), light from those supernovae would reach us thousands of years apart.

Even looking at the Whirlpool from the top down, these gigantic explosions probably happened several hundred years apart. That fits the supernova rate in our own galaxy, thought to be about one every fifty years.

From 31 million light years away, this beautiful galaxy looks flat. But don’t be fooled. Our own Milky Way is about a thousand light years thick, and it’s very likely this one is too.

It seems a long shot, but it’s more likely the light from those three supernovae just happened to reach Earthling eyes within two decades. Still, it’s pretty amazing how these dying giant stars about the size of our inner solar system (out to about Mars or the asteroids) can literally outshine billions of stars.

Nice demonstration video of the Earth’s rotation. Worth checking out.

When God spoke to Abram of many descendants, his reference was astronomical:

Look up at the sky and count the stars, if you can. Just so, shall your descendants be. (Gen 15:5b)

Count the planets, if you can: that would have been more impressive, though a bit mystifying to the patriarch.

Modern astronomy continues to turn expectations on their ears. Universe Today reports on a New Zealand-Japanese study that found a handful of Jupiter-sized planets wandering in deep interstellar space.

The Greek word πλανήτης (planetes) means “wanderer.” These newly-found bodies certainly are. While most known planets (531 at today’s count) orbit their star in a very orderly way), these others are unattached to any star, wandering freely–and coldly–through deep space in between the stars. There is one of two possible mechanisms for that.

Door number one: an interstellar cloud might not have had enough material to coalesce into a star. So there was just enough material for a large planet, a body too small to ignite the hydrogen fusion that powers a star.

Door number two: a planet was formed in orbit around a star, but was ejected by the gravitational influence of a larger planet. Does this really happen? The mechanism happens early in a solar system’s development: giant planets experience a “braking” from the gas and debris surrounding a star. They slow down, which means they very gradually spiral in toward the star. Any smaller planet in the way, will either be nudged to plummet into the star or ejected into the outer system or beyond.

How could we tell which one happened in a particular case? It would hard without on-the-scene examination. An orphan planet with moons was more likely to be born in deep space. The ejection from a star system will possibly scatter any moons involved in such a cosmic near miss. The smaller the planet, the more likely it was ejected.

I was reading of a theory that some of the early large moons of Jupiter and Saturn also experienced a similar fate. Perhaps even two or three generations of them.

So not only are there giant planets born in deep space, and planets of various sizes hurtling through the universe, but also moon-sized bodies completely divorced from home planet or star. It could be that such bodies are ten to thirty times more abundant than the stars themselves.

Image (it’s an artist’s depiction, not an actual planet) credit: NASA/JPL-Caltech

I’m reading a great book right now: astronomer Mike Brown’s neat memoir How I Killed Pluto and Why It Had It Coming. This is the guy who discovered something larger than Pluto, setting into motion the controversial 2006 reclassification of the former ninth planet as a dwarf planet.

Lots of good science, written for the thoughtful non-scientist, interwoven with bits of his life story: grad school, courting, marriage, and baby daughter. Some hijinx from the scientific community, too.

Brown explains the back story behind the search for planets in the outer solar system–Pluto’s neighborhood and beyond. The Caltech scientist meets his future wife in the basement of the Mount Palomar Observatory. How cool is that?

This is a highly recommended read, especially for the inside human side of science.

I recently finished Iain M. Banks’ Surface Detail, a slightly less impressive book. Less impressive than his previous Culture novels.

At first glance, this book appears to have a theological relevance. There are computer-simulated hells to which the disembodied consciousnesses of dead persons are sent.

Unbeknownst to her, one character has a “recording device” planted into her brain as a young woman, and when she dies, the device broadcasts her personality, memories, skills, and such across interstellar space to a Culture ship.

This, of course, isn’t theology. It’s just technology.

Over the years, I’ve read almost every Culture novel, mostly in order of appearance. It’s a challenge for an author to create what is essentially an anarchic utopia, where citizens are unencumbered by poverty, accidental death, constructions not only on their freedoms, but also their whims.

In the Culture novels, the conflict is from outside this safe society of thirty trillion: what happens when people outside the Culture do bad things, or when individuals within the Culture have to break their own rules to protect a greater good?

A non-Culture society sets up and promotes virtual reality hells. Under the shadow of controversy about this, it is decided to hold a VR war to determine the fate of hell: to abolish them or continue them. One side, however, decides to cheat.

Banks wrote a slew of Culture novels in the 90′s. He’s recently brought out two, this one, and Matter (2008). I found the latter very difficult to get going. A caution: any review is necessarily subjective, even by my own standards. I’ve been reading mostly sf short stories the past few months, so my patience with more complex novels and their slower start-up routines may be tested. I like Iain Banks and his work. Maybe he’s set high standards that I don’t see being met in these later books.

My main problem with the Culture is that its society as a whole seems to produce a boring sameness of indulgence and materialism. And even the exceptions, those agents whose missions make up the stories of the Culture novels, they all seem rather the same, too. The concepts are really interesting, usually. Though a virtual reality afterlife is an extremely tame idea compared to alien artifacts, galactic-scale warfare, or even a doctor of a king on a backward planet. The setting almost seems to be a smarmy nod to religion: let me set up some gods and hells and show you how faith doesn’t work.

Surface Detail also involves a manufactured fleet of three-hundred million warships, but that’s far from the centerpiece of the story. The Culture deals with it as easily as a leafblower, a rake, and a match will resolve November tree litter in a backyard.

In his novels, Iain Banks has created one large character, the Culture itself. That character is untouchable, unmovable, incorruptible. So I ask: where’s the needful conflict to get a large novel moving? Sometimes things are too perfect. And no amount of grisly violence can resolve that.

In a way, the Culture has an analogue in Christian fiction. Like God, it can never be touched or moved. Real three-dimensional characters will always be more interesting. But if you’ve never read a Culture novel, I strongly recommend reading at least one. Banks is an outstanding author who, just from my perspective, seems to be in some sort of slump.

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