The search for Vulcan

Many myths are based on truth.
Spock, "The Way to Eden"

Do Vulcans really have pointy ears? Are they a species completely devoted to logic? Do they even exist? Does Vulcan even exist? These are no longer unanswerable questions. The NASA/JPL PlanetQuest project has just announced that the upcoming mission, SIM PlanetQuest, will scan the star 40 Eridani, the star Gene Roddenberry posited as the home of Vulcan.

Now of course it is unlikely that Vulcans, if any exist, will be much like Spock, Tuvok or T’Pol. But it certainly will be interesting to know. One thing that many do not know, is that the idea of Vulcan goes back way beyond the invention of Star Trek. In fact, the idea of a planet named Vulcan can be traced to 1859 and a French celestial mathematician named Urbani Le Verrier. Based on some perturbations (irregularities) in the orbit of Mercury, Le Verrier suggested that an as yet undiscovered planet orbited between Mercury and the sun. Being so close to the sun, the name Vulcan, after the Roman god of fire, seemed appropriate.
In fact, it seemed so reasonable for Vulcan to exist, that some astronomers started to look for it. I have an old book, called Recreations in Astronomy by H.W. Warren, D.D., and dated 1879. Here is an excerpt:
The same great genius of Leverrier that gave us Neptune from the observed perturbations of Uranus, pointed out the perturbations of Merury that necessitated either a planet or a group of planetoids between Mercury and the sun. Theoretical astronomers, aided by the fact that no planet had certainly been seen, and that all asserted discoveries of one had been by inexperienced observers, inclined to the belief in a group, or that the disturbance was caused by matter reflecting the zodiacal light.
When the total eclipse of the sun occurred in 1878, astronomers were determined that the question of the existence of an intra-mercurial planet should be settled. Maps of all the stars in the region of the sun were carefully studied, sections of the sky about the sun were assigned to different observers, who should attend to nothing but to look for a possible planet. It is now conceded that Professor Watson, of Ann Arbor, actually saw the sought for body.
The book goes on to say that Vulcan is 13 million miles from the sun, and revolves around our central luminary in just 20 days. Unfortunately, however, Vulcan wasn’t really there. Professor Watson and others who reported the discovery were wrong. Vulcan simply doesn’t exist — at least not between the sun and Mercury. The perturbations of Mercury’s orbit were later explained by Einstein’s General Theory of Relativity, which showed them to be the result of a kind of "warping" of space (ala Star Trek!) with no need for a planet to be there. So Vulcan was pretty much forgotten until Rodenberry and his writers revived it.
So does Vulcan orbit 40 Eridani? Some day soon we will know.
 
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Image of a hypothetical rocky planet orbiting another star courtesy of NASA/JPL and PlanetQuest

11 Responses to “The search for Vulcan”


  1. 1 Shannon May 12th, 2007 at 2:16 pm

    Scientists continue to come up with new theories that refute previous theories that were thought to be absolutely true. I wonder which current theories will be proven wrong in the near future?

  2. 2 Larry Sessions May 12th, 2007 at 3:11 pm

    Boy, I wish I knew. Then I would be a best-selling author! Actually, come to think of it, I have a friend who has authored several books on the future and future trends, but he isn’t a multi-millionare yet, even though my impression is that his predictions are pretty good. So who knows?

    But seriously, don’t expect everything we know today to someday be refuted and replaced by a new and better idea. In many cases that surely will happen, but my guess is that *most* of the basic laws of the natural world are known well enough that a thorough overthrow is not likely — it will be more like progressive refinements. But there are some areas, including cosmology, quantum physics and “string theory,” where major changes are, in my opinion, much more likely.

    LS

  3. 3 sam May 13th, 2007 at 7:02 am

    i love following the continuing debate on a grand unified theory. also i believe that in an infinite universe(time wise)anything that you can think of or anyone else has thought of in any part of history, it has happened, will happen, or is happening. that runs from a world where odin rules your life to a universe where cartoon characters are real(this would of course require different laws of physics).i mean the big bang or any theory would need something before and after, unless you were to debate the universe exists because we are here to observe it.but infinity means infinity and it has to be that anything is possible in an infinite amount of time or space. i just wish i was born into a time where we found another life bearing planet.

  4. 4 deborahbyrd May 13th, 2007 at 7:16 am

    I just wish i was born into a time where we found another life bearing planet.

    Sam, it’s conceivable you could get your wish! We had an interesting interview recently with Nancy Kiang of the NASA Goddard Institute for Space Studies in New York. She talked about finding life on other planets by looking for oxygen in their atmospheres: the result of photosynthesis from plants. Here’s a 90-second version … Seeking life on alien worlds? Look to plants.

    And here’s a 13-minute podcast with Nancy Kiang: Searching for photosynthesis among the stars

    A few decades ago, we didn’t know for sure of any extrasolar planets. Now we know 200 planets orbiting other stars. Who knows what will happen next? It’s very exciting!

  5. 5 Larry Sessions May 13th, 2007 at 11:24 am

    Sam,

    The Universe *may* be infinite in size (there is no way to tell for sure), but there are limits, such as the speed of light and the maximum distance we can see in space. Space itself is certainly larger than the portion we can see, but the full extent is unknown. It is not a “given” that the Universe is infinite in either space or time, and in some interpretations, time began with the Big Bang and hence there was nothing before. Presumably it could be infinite to the future but not to the past (if that makes any sense!). Stephen Hawking has said that asking what happened before the Big Bang may be a little like asking what is “one mile north of the North Pole.” It is a meaningless question.

    And yet there is a theory, based on quantum physics, that there may be an infinite number of universes, a new one springing up full blown when anything changes in any of the other universes, and none interacting with or detectable from each other. Of course there is no real evidence of this, but it is not forbidden by the laws of physics as we now know them. As you note, there are some who believe that if something is not forbidden, then it must be true somewhere at some time. But by the laws of quantum physics, it is not absolutely forbidden that the earth could suddenly stop orbitting the sun at 150 million kilometers and take up an orbit at 15 million km (or any other distance), which would make it rather hot for us. But the liklihood of that happening is incalcuably small, so I am not planning to stockpile air conditioners and ice makers.

    LS

  6. 6 sam May 13th, 2007 at 11:00 pm

    i base my comments on the current understanding and theory behind quantum physics. i stand behind my statements of an infinite universe simply because there is no current thought to disprove. it is hard for my human mind to imagine that absolutely nothing exists before a beginning simply because i know the question….why now?…why did nothing exist before and how can nothing exist later? why now? i know the question to some might seem simple but why now? mabey there is some merit to the argument the universe exists simply because someone is here to observe it but i do not believe this to be so.i also believe that our current understanding of everything at this point is as educated and valid as the current thinking 3000 years ago, we dont know, what we dont know. i believe in a thousand years or mabey 10,000 we will see the world of today as we today see neolithic humans.but then again my views may seem simple. but i doubt it. but thank you for providing fodder for my curiosity.

  7. 7 Larry Sessions May 14th, 2007 at 9:40 am

    Hi, Sam. I didn’t mean to say that the Universe is not infinite, but as you state there is no evidence to prove that it isn’t, by the same token there is no evidence to prove that it is. And for me, it is as hard (make that “impossible”) to fully grasp the idea of infinite time as it is for me to imagine a beginning in time with nothing before it. I just can’t do it. I can talk about it, but I can’t really comprehend it in my mind. We have limited, 3-dimensional minds, and as such I think we are limited in what we can fully understand. Now I don’t see that as negative, and I there will always be more to learn, more to explore. In fact it is good, because if we weren’t limited in our abilities, we would already know everything — we would be omniscient! And with nothing left to learn, it would be very boring!

    No doubt you have heard that American Indians often referred to the deity as the “Great Spirit.” In the Lakota tongue, that phrase is “Wakan Tanka.” However, “Great Spirit” is not the only possible translation. It can also be translated as “Great Mystery.” That’s what I think the Universe is, a great mystery. There will always be more for us to explore and learn, but we will never know it all.

  8. 8 sam May 14th, 2007 at 10:42 pm

    i find it hard to understand a universe with a sudden beginning but i have always,since my first memory of thinking about it,been able to understand the concept of forever with no beginning and no end. itseasy when you think about it as a child but i can see the problem when we become older. the more i know of science and physics the harder it seems to be able to enjoy a sci fi movie or book. luckily i have the attention span that allows me to suspend picking things apart if the novel is great. but i have to say its rare to see a movie that can hold me as strongly. when i stated..why now.. i did not mean during our lifetime. i meant why now in the history of the universe did the earth form?i cant see how nothing existed before the big bang because my brain tells me what caused the big bang to happen? something was jostled?god sneezed?particles time and space suddenly appeared?i certainly see merit in a cyclic universe of explosion,expansion,collapse.but to think of anything other than eternal seems odd to me.my memories of thinking about this are from around the age of 5 when my mother was teaching me to read and one night she was pointing out orion i think it was but she began to tell me of an endless number of stars. this thought has driven my curiosity to this day.

  9. 9 Larry Sessions May 15th, 2007 at 8:13 am

    A common idea around today is that the Universe arose from nothing — no matter, no energy — nothing. It suddenly came into existance at the moment of the Big Bang. This part, at least, is consistent with religious ideas. If you aren’t inclined toward religion, then it seems like magic — like a magician making someone suddenly appear out of nowhere — except there is no magician and it is completely real. Wild ideas, but in fact we see it happen. It *is* happening all day, every day, every where, but on a very small scale. Particles, operating through the well-known laws of quantum physics suddenly appear — as far as we can tell out of nothing at all — all the time. Call these virtual particles and the process a quantum fluctuation. There is no reason that the Universe itself could not have been one of these quantum fluctuations out of nothing, although on an enormously larger scale than what can be detected every day. It seems wild, but it is possible. Still this doesn’t answer the question satisfactorily as to where the Universe came from because we can still ask, well what caused that? The major school of quantum physics — known as the Copenhagen Interpretation — basically says that we should not even ask the question (at least in regard to quantum fluctuations) because we CANNOT know the answer. But of course, many are not satisfied and always ask why or what happened before. Telling us not to think about it is kind of like telling a 5-year-old not to think about ice cream while you are standing at the counter of Haagen Daz. So you and I and anyone else who uses his or her brain will continue to think about it and ask questions. That is good and I think necessary, but I don’t hold much hope of finding an ultimate answer.

  10. 10 Sinde May 31st, 2007 at 7:57 am

    I know where you can find Vulcan: Birmingham, Alabama! :)

    http://www.visitvulcan.com/

  11. 11 Larry Sessions May 31st, 2007 at 8:33 am

    Sinde,
    Wow! Who’da thunk? I have relatives in Birmingham, but I’ve never been there. You know, there is a Jupiter, Florida, too and I am sure other planet-named cities and communities across the US. We have our own little solar system right here in the good old USA!

    LS

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