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The Milky Way is Not a Spiral?

ETEQ writes "Space.com reports that new data from the Spitzer Space Telescope showing that the Milky Way is in fact a barred spiral! Looks like all our old astronomy textbooks will have to be thrown away..."

39 of 594 comments (clear)

  1. Throw 'em Away by Anonymous Coward · · Score: 5, Funny
    Looks like all our old astronomy textbooks will have to be thrown away...
    Yes, this change is truly astronomical.
    1. Re:Throw 'em Away by syousef · · Score: 3, Insightful

      Call me old fashioned but I believe that when you find evidence that invalidates or modifies a theory, you REVISE your text book instead of throwing it away. I don't really think we want to throw away the entire body of astronomical evidence over this one. Apart from that policy putting the human race back quite a bit, that'd upset me quite a bit given that I spent 2 1/2 years studying astronomy.

      Besides you don't want to set a precedent for your cowboy president to throw away all books on evolution because some small flaw is found in one part of the theory.

      --
      These posts express my own personal views, not those of my employer
  2. Chucking Books... by ackthpt · · Score: 5, Funny
    Looks like all our old astronomy textbooks will have to be thrown away..."

    Just be careful of the words "throw away", "give away" and "books" in Henico County, VA

    "Mine, mine! Geroff! Mine!"

    --

    A feeling of having made the same mistake before: Deja Foobar
    1. Re:Chucking Books... by Rei · · Score: 3, Interesting

      A friend and I once found a (1904?) medical encyclopedia ("Medicology"). The thing is just great. Some highlights (of many!):

        * Hundreds of treatments involving mercury and various acids
        * Discussion of the debate on whether what causes rabies is an organism or a toxin
        * Amusing description of the disease "Hysteria", a catch-all disease for women.
        * Recipes for feeding sick people - includes about a dozen types of gruel.
        * Discussion of STDs couched in terms of Christian morality
        * A detailed discussion of the Japanese medical system around the turn of the century.
        * A plant identification guide, in the section for how to prepare your own medicines

      --
      Kneel Before Christ!
    2. Re:Chucking Books... by hpulley · · Score: 3, Insightful

      Astronomy texts as recent as 40 years old still mention the Marias on the Moon to be ancient seas (though some scoff at the idea that they currently hold water, how preposterous); how the dark areas on Mars are the result of vegetation, and yet made humour about how people used to think there was intelligent life there; green stars, especially the green companion of Antares when there are no green stars; etc. Interestingly they DO mention planet X since they were still searching for it while most recent astronomy books had given up on the search for planet X. Now it seems we've found planet X after all, and even bigger than we thought after we discovered the IR telescope had the wrong target.

      Going back further, astronomy books thought galaxies were nebulae, just puffs of gas and dust within our galaxy. Just like we originally thought that ours was the only solar system, it was not that long ago that we thought our galaxy was the only one. Soon perhaps the idea of just one universe will sound silly to us...

      --
      $#!^ happens, but why does it always have to happen to me???
    3. Re:Chucking Books... by Golias · · Score: 4, Insightful

      If you think about it, 1850 that wasn't too long ago. It seems that humanity has been full of sh%t for most of history.

      We still are. 100 years from now, they will laugh at us for our crazy notions about strings, chaos, and the human genome.

      Science is not, and never has been, about being right. It's about trying to find predictive models of the universe which you can rely on most of the time.

      The most advanced concepts of science will most likely sound as silly as "turtles, all the way down" to people a couple generations in the future, but they are still incredibly valuable to us today.

      --

      Information wants to be anthropomorphized.

    4. Re:Chucking Books... by bunratty · · Score: 4, Insightful

      This is a major theme of the book and PBS series The Day the Universe Changed. It's all to easy to look back in history and think that our ancestors had ridiculous beliefs. But it's also easy to forget what we perceive isn't reality, but our own interpretation of what we get from our senses, which is filtered by our personal beliefs and biases. What we think is real is often an elaborate hallucination that often has little or no bearing to actual reality.

      --
      What a fool believes, he sees, no wise man has the power to reason away.
  3. I always thought it was... by VolciMaster · · Score: 3, Funny

    a swirl of caramel and chocolate?

  4. Not Exactly by Mr.Coffee · · Score: 4, Insightful

    The evidence they found tells us that this MAY be a barred spiral galaxy, it is not yet, theres just good strong evidence that could lead to a barred-sprial conclusion.

    --
    Cogito Eggo Sum, I think therefore I'm a waffle
    1. Re:Not Exactly by frodo+from+middle+ea · · Score: 3, Funny

      you don't seem to know the terms "media spin", or "jumping to conclusions", or "may increase the risk by upto 50%" etc.

      --
      for the last time people, I am "frodo from middle eaRTH", not "middle eaST".
    2. Re:Not Exactly by Carnildo · · Score: 4, Interesting

      This isn't exactly news, either. I recall seeing reports of this in magazines like Scientific American at least fifteen years ago.

      --
      "They redundantly repeated themselves over and over again incessantly without end ad infinitum" -- ibid.
    3. Re:Not Exactly by Rei · · Score: 5, Funny

      Cogito Eggo Sum, I think therefore I am a waffle

      No, if I'm not mistaken, it would be "I think I am a waffle." "Ergo", the word you replaced, is what means "therefore".

      Of course, "Eggo" doesn't sound like a nominative noun to a Latin speaker - it could be something like "Eggus" or whatnot, for which "Eggo" would be the ablative and dative singular. If that were the case, and "Eggus" meant "waffle", I believe it could be translated as "I think I am for the waffle", "I think I am to the waffle", "I think I am by means of the waffle", or several other things (I never really fully got the ablative).

      --
      Kneel Before Christ!
    4. Re:Not Exactly by the_mighty_$ · · Score: 5, Interesting

      If the submitter had actually read the article....no, I guess that's too much to ask.

      Quote FTA "The bar is made of relatively old and red stars, the survey shows. It is about 27,000 light-years long, or roughly 7,000 light-years longer than previously thought." (emphasis mine)

      In other words, the news isn't that they just discovered the Milky War is a bared spiral galaxy, the news is that the Milky Way's bar is 7,000 light-years longer than scientists thought.

      --
      VI VI VI - the editor of the beast!
    5. Re:Not Exactly by Stuart+Gibson · · Score: 3, Funny

      By "Meaning of Life" we should all read "Life of Brian", right?

      Stuart

      --
      It's all fun and games until a 200' robot dinosaur shows up and trashes Neo-Tokyo... Again
  5. 45 Degree line? by Intron · · Score: 5, Funny

    "the bar is oriented at about a 45-degree angle relative to the main plane of the galaxy"

    I'm pretty sure that this means "Do not enter" according to international standards.

    --
    Intron: the portion of DNA which expresses nothing useful.
    1. Re:45 Degree line? by teuben · · Score: 5, Informative

      "the bar is oriented at about a 45-degree angle relative to the main plane of the galaxy"

      typical science reporting. totally wrong. if that
      chap had bothered to READ and understand the original article or web site, he would have
      read
      "It also shows that the bar is oriented at about a 45-degree angle relative to a line joining the sun and the center of the galaxy."

      meaning the bar is in the galactic plane, not sticking out as the space.com article suggests

      http://www.news.wisc.edu/11405.html seems a far better reference.

      Just for the record, I still find it amusing that
      astronomers always seem to need to report
      in numbers astronomers don't even use. I know
      of no single person that uses the lightyear, in
      galactic astronomy we use the kilo-parsec (kpc).
      The pc and lj are pretty close to each other,
      3.26 between the two. So that 27,000 lightyear bar
      would be 8.2 kpc. It must be the total length, since the sun is about 8 kpc from the center of
      the milky way.

    2. Re:45 Degree line? by toad3k · · Score: 3, Insightful

      A parsec means nothing to me. A lightyear on the other hand means a lot. If it takes 8 minutes for light to reach earth from the sun, then I can kind of, sort of imagine how far away 27000 lightyears is.

  6. Old Textbooks? by UncleJam · · Score: 4, Insightful

    Looks like all our old astronomy textbooks will have to be thrown away...

    Which happens every year at the university level anyway, where a new 'edition' comes out every year with one or two pages slightly modified, but you have to buy the new one for $150 since the questions and homework study in the appendix are completely different. No, I'm not bitter that the fall semester is coming or anything.

  7. Flat Earth. by dividedsky319 · · Score: 5, Funny

    Right, and the next thing you'll tell me is that the Earth isn't flat! And that the sun doesn't revolve around the earth. Blasphemers!

  8. It looks that way for now. by rob_squared · · Score: 4, Interesting

    Just wait until the collision happens: http://www.cita.utoronto.ca/~dubinski/tflops/

    --
    I don't get it.
    1. Re:It looks that way for now. by Rakshasa+Taisab · · Score: 4, Interesting

      There are (well reasoned) theories that the spirals are caused by earlier collisions. Thus this future collision will actually help produce new spirals. It is considered possible that the rotation of the galaxy will wind up the spirals so much they will disappear over time.

      Other interesting aspects of the spirals is that they do not actually contain much more mass, 5% more iirc, than the space between the spirals. There is a larger number of new stars being formed in the spirals, thus the bright but shortlived stars make them visible.

      These star births are caused by the compression of cold molecular clouds. Thus when another smaller galaxy collides it may cause shockwaves to travel through the galaxy compressing the molecular clouds.

      --
      - These characters were randomly selected.
  9. Isn't it obvious? by convex_mirror · · Score: 5, Funny

    I always knew that the milky way was a bar, and that it is filled with nougat.

  10. Aaaw crap... by lobsterGun · · Score: 4, Funny

    ...looks like I'm going to have to get new business cards.

  11. No way by gowen · · Score: 5, Funny

    The fact the milky way is a normal spiral is a fundamental tenet of Flying Spaghetti Monsterism, and this new evidenc is just a theory. I demand that people continue to teach my older (wrong) alternative theory.

    --
    Athletic Scholarships to universities make as much sense as academic scholarships to sports teams.
  12. Obligatory Homer Quote by LocutusMIT · · Score: 3, Funny

    ... the Milky Way is in fact a barred spiral!

    Mmmmmm... Milky Way Bar...

  13. Patch for the books by drgonzo59 · · Score: 3, Funny

    They'll just issue a patch for every book. They'll just give everyone a sticker and tell them wich page and paragraphs to stick it on. ;)

  14. Old news by Anonymous Coward · · Score: 5, Informative

    This is actually more of a confirmation of prior work. See the following, for example, which dates back two years.

    Title: The Galactic Bar
    Authors: Merrifield, M. R.
    Journal: Milky Way Surveys: The Structure and Evolution of our Galaxy, Proceedings of ASP Conference #317. The 5th Boston University Astrophysics Conference held 15-17 June, 2003 at Boston University, Boston, MA, USA. Edited by Dan Clemens, Ronak Shah, and Teresa Brainerd. San Francisco: Astronomical Society of the Pacific, 2004., p.289

    Abstract:
    Like the majority of spiral galaxies, the Milky Way contains a central non-axisymmetric bar component. Our position in the Galactic plane renders it rather hard to see, but also allows us to make measurements of the bar that are completely unobtainable for any other system. This paper reviews the evidence for a bar that can be gleaned from the many extensive surveys of both gas and stars in the Milky Way. We introduce some simplified models to show how the basic properties of the bar can be inferred in a reasonably robust manner despite our unfavorable location, and how the complex geometry can be used to our advantage to obtain a unique three-dimensional view of the bar. The emerging picture of the Galactic bar is also placed in the broader context of current attempts to understand how such structures form and evolve in spiral galaxies.

  15. Known for decades by Xerxes314 · · Score: 5, Informative
    The blurb is very poorly informed. The bar structure of the Milky Way has been known for decades. Not only does a cursory search of the Harvard Astrophysics database yield a 1992 paper on the subject, but the Wikipedia article on the Milky Way clearly describes its structure as SBbc (loosely wound barred spiral).

    Next week, I'm sure we'll all be thrilled to learn that the sky is blue. Rewrite the textbooks!

  16. Still a spirl... by CrazyTalk · · Score: 4, Funny
    Don't you guys know anything about object oriented programming? A barred spiral inherits from spiral:

    e.g.

    public class CBarredSpiral : CSpiral

  17. Dupe by MillionthMonkey · · Score: 4, Insightful

    Not exactly a "revelation"- I learned that the Milky Way was a barred spiral in a Slashdot story three years ago.

  18. Re:Science is not wright all the time. Blasaphmy!! by Black+Parrot · · Score: 5, Insightful


    > Well the actual problem is people on both sides. First you have one group who believes that science is actual truth, and that all the problems in the world can be fixed with science.

    I suspect that most scientists actually believe that science is an attempt to get at the truth, and will likely never be complete. And that only some problems can be fixed with science.

    > Religion on the other hand is more of a combined study where you put together many different studies and look at the truth as a whole

    Actually, religion looks at mythology and people's opinions about theology, morals, the proper social order, and the existence of a lot of unevidenced supernatural stuff.

    > The main difference is science is trying to constantly disprove itself while religion is trying to prove itself. They are not opposing forces just different methods of trying to find truth.

    Religion, most often, merely attempts to maintain traditional beliefs and values. Those who are "trying to find truth" usually get kicked out of the club, because truth is rarely deferential to traditional beliefs.

    --
    Sheesh, evil *and* a jerk. -- Jade
  19. That explains a lot! by ClippyHater · · Score: 4, Funny

    Everyone's said my directions suck. I kept telling them, "It's a huge spiral, you can't miss it!", and they keep calling me a useless monkey-boy who couldn't navigate my way into a black hole.

  20. How Come... by eno2001 · · Score: 4, Funny

    ...there are no pictures of the Milky Way from space? Whenever I've Googled for pictures of the Milky Way, I either get artist renderings or these stupid pictures of a strip of the night sky. Since we've supposedly went into space a lot of time, we should have good photos of the Milky Way from space. Even moreso since the Voyager spacecraft left the universe a year or so ago. When the voyager left our universe, it should have had a great shot of the entire galaxy and all it's planets. I mean, the universe is what... like ten million miles wide or something, right?

    --
    -"...bad old ideas look confusingly fresh when they are packaged as technology" - Jaron Lanier (Digital Maoism on Edge.o
  21. Re:Science is not wright all the time. Blasaphmy!! by MightyMartian · · Score: 3, Insightful
    At least science provides a means by which we can determine these things. Religion, when it's boiled down, is nothing more than a "Goddidit" argument. Can anybody say how God would have done it? What forces were brought to bear? How the design was formulated?

    Arguments from incredulity may satisfy your faith, but in the pursuit of knowledge, they're in fact worse than useless.

    --
    The world's burning. Moped Jesus spotted on I50. Details at 11.
  22. Re:Humble Pie by MightyMartian · · Score: 5, Insightful

    What a load of blather. Science is simply a way of attempting to explain observed data and make predictions upon it. It isn't a religion any more than hammers or toothpicks are religion. Maybe some misguided souls who likely don't understand science think of it in that fashion, but science is a methodology, a means of determing provisional explanations. Have you ever heard of a religion that says "to the best evidence we have to date is explained by , but we await more data"?

    --
    The world's burning. Moped Jesus spotted on I50. Details at 11.
  23. Re:Science is not wright all the time. Blasaphmy!! by Black+Parrot · · Score: 4, Insightful


    > This has been precisely my argument in favor of Intelligent Design. Evolution could have been the product of the creator stacking the dominoes so the right tap made it all happen. Evolution and the Big Bang may have been the implementation of "the Design."

    FYI, that's not an argument in favor of ID. It's merely an argument that ID could be framed in such a way that it would not be in conflict with the known facts.

    Unicorn Theory can also be framed in such a way that it is not in conflict with the known facts, but an argument in favor of UT is another matter altogether.

    And that's precisely the problem with ID. When you analyze their arguments and spot them for the bunkum that they are, you're left without any reason to believe in ID. That's not a proof that no IDer exists, but it leaves ID in the same category as UT, Santa Claus, the Easter Bunny, PSI power, and other stuff that some people believe in without any evidence.

    --
    Sheesh, evil *and* a jerk. -- Jade
  24. Re:Science is not right all the time. Blasphemy!! by sg3000 · · Score: 4, Insightful
    Well the actual problem is people on both sides. First you have one group who believes that science is actual truth, and that all the problems in the world can be fixed with science. Then there is an other group who believes that their religion is the full truth and anything to prove the otherwise is evil. Science is a process of formally figuring out how the universe works, it deals with a lot of guess work and we just check to see if our guesses are feasible. Religion on the other hand is more of a combined study where you put together many different studies and look at the truth as a whole, and if science can't 100% prove it, other theories are fair game, if they fit within the philosophy better.

    Strawman to the nth degree.

    Your comment reveals a profound ignorance of what science is about. Anyone who believes science reveals truth doesn't understand science. Science is the search for fact. not truth. As Indiana Jones memorably said,
    Archaeology is the search for fact... not truth. If it's truth you're looking for, Dr. Tyree's philosophy class is right down the hall.

    Furthermore, the purpose of science isn't to "solve problems"; it is the search for fact.

    And ever since the scientific revolution and the Enlightenment displacing Rationalism in the 18th century, science never seeks to prove anything. In science you can disprove, but you cannot prove because of the principle of skepticism. So the statement "if science can't 100% prove it, other theories are fair game" makes no sense at all.

    The purpose of science is the search for fact. Science is the study of the natural world. Religion and philosophy are there to provide commentary on and understanding of the human condition. From that perspective, they have nothing to do with each other and should not be mixed.
    --
    Insert simplistic political, ideological, or personal proselytization here.
  25. No, not the treatment for Hysteria you'd expect. by The+Penguine+Empress · · Score: 3, Informative

    ... Actually, I've heard/read that the treatment was manual stimulation to produce orgasm.

  26. Predictions for the world of 2105 by Savantissimo · · Score: 4, Interesting

    Essentially all the new physical theories will be seen as the most transparent bull - inflation, the age and structure of the universe, the standard model, M-theory...

    Psychiatric drug therapy of today will be seen in the same light as trying to fix jet engines using nothing but fuel additives. Most current forms of morality and immorality will be demonstrated to be correctable mental defects.

    All sex laws and taboos will be seen as medieval.

    More than 99.9% of people in the solar system will be able to outscore 99.9% of today's people on today's mental tests, but we would regard most of them as cheating. They will regard their enhancements as part of themselves or as corrective devices, like eyeglasses are today.

    The concept of privacy, even for thoughts, will be as antique and nominal as the divine right of kings is today; nevertheless, people will be more free in the sense of usable personal power than they ever were in the past.

    Global cooling will be a concern, but manageable.

    Only a few fundamentalists will keep traditional 100% human bodies, or for that matter just one body. Some will have as many bodies as todays people have shirts.

    Most "persons" in existence will not have been born at all. Greater than 90% of the population will have predominantly non-biological substrates, but some of these will have been born, while many of the mostly bio-based people will not have been. The sentient population will exceed 1 trillion by most measures, but will be difficult to decide how to count the self-aware corporations, partials and copies, distributed intellects, acorporeal persons and so forth. Most people will be very young by today's standards, but this will have little correlation with experience and knowledge, which will not necessarily be linked with personal histories.

    Lamarck will be seen as not all that far off the mark. Epigenetic and protein-reaction-web engineering will be a basic ability like computer programming is today. The supposed decoding of the human genome at the end of the 20th century will be regarded as about as complete as Columbus' understanding of world geography. Virtually everything important will be in the introns, methylation etc. and in protein regulation of the genetic molecules.

    Genetics (and other substrate codes) will be seen as easier to correct than personal environmental history , but not by much.

    The expression "willful ignorance" will be seen as self-evidently redundant.

    The theory of relativity will have undergone significant modifications.

    Archaelology and paleontology will be essentially competed sciences, and today's theories will be seen as wrong in virtually every respect.

    Teleportation will be commonplace, but will be based on information rather than matter per se traversing distances.

    Eric Drexler's predictions in Engines of Creation and Nanosystems will be seen as being as over-conservative as Ben Franklin's speculations about the use of electricity.

    Consciousness will be more fully understood than quantum mechanics is today. Indeed, they will turn out to be related, but only in a very vaguely similar manner to most of the 20th century speculations in that vein.

    There will have been at least one more war which killed over 1,000,000 people, but none in at least 30 years.

    Strong AI will show up late in the game, and won't take off instantly, but will have far surpassed human levels in every way in the late decades of the 21st century.

    --
    "Is life so dear, or peace so sweet, as to be purchased at the price of chains and slavery?" - Patrick Henry