David Barrado y Navascués

¿Cuántos planetas hay en el Sistema Solar? ¿Cuál es la definición más idónea? ¿Cómo deben ser llamados? ¿Cómo se aplicaría a los objetos que se están  encontrando fuera del  Sistema Solar?

Ayer regresé de un largo viaje, tres semanas sin noticias, sin correo electrónico, en un mundo mucho más sencillo. Leí el primer periódico en el avión, el Wall Street Journal. Sorprendentemente, me encontré una noticia sobre la nueva definición del término «planeta».  La Unión Astronómica Internacional (IAU) decidirá sobre este tema dentro de unos días. Se propone ampliar la deficinión de manera que Plutón, cuya naturaleza se ha discutido durante mucho tiempo, siga conservando el status. Así, Ceres, un planetoide cuya órbita se encuentra entre Marte y Júpiter, pasaría a ser un planeta de pleno derecho, al igual que otros objetos descubiertos recientemente y que se localizan a distancias más allá de la  de Neptuno. Así, tendríamos uns sistema planetario con 12 planetas.

Desde mi punto de vista, creo que es un error, es una solución politica más que otra cosa, aunque mis objeciones son limitadas. En cualquier caso, creo que existen dos cuestiones que no se estan tratando adecuadamente. La primera se refiere a los nombres. Creo que deberíamos seguir usando la mitología greco-romana para los planetas del sistema Solar (y por supuesto, no usar nombres de programas de televisión o películas, que solo tienen significado dentro del contexto cultural de una o dos generaciones muy específicas). Por otra parte, la nueva definición debería considerar los casi 200 planetas descubiertos fuera del Sistema Solar, mediante el uso de diversos métodos, y cuyas propiedades en ciertos casos son mu distintas a los «hermanos» de la Tierra. Finalmente, me gustaría saber que ocurrirá con los objetos aislados de masa planetaria (xebarcos o planemos). ¿Son o no son planetas?

PD:  Según transcribo esta entrada a MadrI+D, veo que Benjamín escribió sobre este mismo tema la semana pasada.  Incluyo el enlace a  su texto.

ENLACES:
IAU Working Group for Planetary System Nomenclature, Planet and Satellite Names and Discoverers(IAU)
¿Qué es un planeta?…(DByN)
Sobre la diversidad de los Sistema Planetarios (DByN)
Observan el nacimiento de planetas gigantes solitarios (IAC)
Los astrónomos buscan una nueva definición de planeta(DByN)
¿De nueve a doce planetas?… en unos días lo sabremos (BM)

Más en…
El baile de los planetas
El baile de los planetas (II)
El baile de los planetas (III)
¿Qué es un planeta?…

Compartir:

91 comentarios

  1. Recommended without hesitation if you care about careful coverage of this topic, and a stop at meledak77mantap reinforced the recommendation, the bar I set for unhesitating recommendations is fairly high and this site has cleared it through the cumulative weight of multiple consistently good pieces rather than through any single standout post which is meaningful.

  2. Appreciate the thoughtful approach, the writer clearly took time to make this readable for someone who is not already an expert, and a look at aurablis kept that going nicely, easy on the eyes and easy on the brain which is always a winning combination when reading on a busy day.

  3. Closed the tab and immediately reopened it ten minutes later because I wanted to reread a part, and a stop at twainskipper drew the same return, content that pulls you back after closing it is doing something well beyond the average and worth marking as exceptional in my mental catalogue of reliable sites.

  4. Will be sharing this with a couple of people who care about the topic, and a stop at magisteriuma added more material worth passing along, the kind of site that is generous with quality content and does not make you jump through hoops to access it which is appreciated more than the team probably realises.

  5. If the topic interests you at all this is a place to spend time, and a look at mage77-rtp reinforced that recommendation, the broader question of where to invest topical reading time is one this site answers convincingly through the consistent quality across multiple pieces I have sampled during the current reading session today.

  6. Bookmark earned, share earned, return visit earned, all from one reading session, and a look at blipsa did the same, the trifecta of bookmark and share and return is rare in a single visit and represents the highest level of engagement I tend to offer any piece of online content these days here.

  7. Just dropping by to say thanks for the effort, it does not go unnoticed when a writer cares this much about the reader, and after I went through mariahill I was certain this is one of the better corners of the internet for this particular kind of content which is genuinely refreshing.

  8. Felt the post was written for someone like me without explicitly addressing me, and a look at joshuablackwellmd produced the same fit, when content lands on its target without pandering you know the writer has done careful audience thinking rather than relying on demographic targeting or interest signals to do the work of editorial decisions.

  9. Now noticing the post fit a particular gap in my reading without my having articulated the gap before, and a look at haulera extended that gap filling effect, content that meets needs I had not consciously formulated is content with reader insight and this site has clearly developed that anticipatory editorial sense across many pieces.

  10. A clean read with no irritations, and a look at a-nz49 continued that frictionless quality, the absence of small irritations is something I notice only when present elsewhere and this site is one of the rare places where everything just works and lets me focus on the substance rather than fighting the format.

  11. Looking at this objectively the editorial quality is hard to deny even setting aside personal taste, and a stop at sandaltrust maintained the same objective quality, the gap between what I personally enjoy and what is objectively well crafted exists and this site clears both bars simultaneously which is rarer than it sounds.

  12. Really like the way the post resists reaching for cliches that would have made it feel generic, and a quick visit to debrabowen kept that fresh feel going, original phrasing and unexpected metaphors are signs that the writer is actually thinking rather than just stitching together familiar phrases into the appearance of content.

  13. Generally my comment to other readers about new sites is to wait and see but for this one I would jump to recommend now, and a look at chousea reinforced that early recommendation, the speed at which a site earns my recommendation is itself a quality signal and this one has earned mine quickly clearly.

  14. Bookmark added without hesitation after finishing, and a look at crackfine confirmed I should bookmark the homepage too rather than just this page, the rare site that earns category level trust rather than just single article approval is the kind I want to rely on across many different topics over time.

  15. Probably going to mention this site in a write up I am working on later this month, and a stop at haircover provided more material for that potential mention, content worth referencing in my own published work rather than just personal reading is content with the highest endorsement level and this site has earned that endorsement.

  16. Now feeling the small relief of finding writing that does not condescend, and a stop at zonalzone extended that respect for readers, content that treats its audience as capable adults rather than as people to be managed produces a different reading experience and this site has clearly chosen the respectful approach across all pieces.

  17. Better than the average post on this subject by some distance, and a look at blog33beat reinforced that, you can tell within the first paragraph that the writer here actually cares about the topic rather than just covering it for the sake of having something to publish that week or that day.

  18. Honestly this was the highlight of my reading queue today, and a look at softcascade extended that across more pages I will return to, ranking what I read against what else I read each day is something I do informally and this site keeps moving up in those rankings the more I explore it.

  19. Found this through a search that was generic enough I did not expect quality results, and a look at seattlebeaches continued the surprisingly good experience, search engines occasionally still surface excellent independent content if you scroll past the obvious paid and high authority results which is reassuring to remember sometimes.

  20. Looking at the surface design and the substance together this site has both right, and a look at percentsa reinforced that integrated quality, sites where presentation and content reinforce each other rather than fighting are sites with full editorial coherence and this one has clearly invested in both layers in a balanced way.

  21. Different feel from the algorithmically optimised posts that dominate the topic, and a stop at juliabarker reinforced that human touch, you can tell when a site is being run by someone who reads what they publish versus someone just hitting submit and moving on quickly to the next assignment without checking the result.

  22. Reading more of the archives is now on my plan for the weekend, and a stop at apporchard confirmed the archive worth the time, the rare archive worth a dedicated reading session rather than just casual sampling is the rare archive of serious work and this site has clearly produced enough of that work to warrant the deeper exploration.

  23. Decided after reading this that I would check this site weekly going forward, and a stop at meghanlawson reinforced that commitment, deciding to add a site to a regular rotation requires meeting a quality bar that very few places clear and this one cleared it cleanly without any noticeable effort or marketing push behind it.

  24. Good quality through and through, no rough edges and no signs of being rushed, and a quick look at alphaapp kept the same polish going, the kind of site that respects its own brand by maintaining consistency across pages which is something I always appreciate as a reader looking for trustworthy information online today.

  25. Will share this on a forum I am part of where it will be appreciated by others working in the same area, and a look at a-nz35 suggests there is more here worth passing along too, definitely a generous resource that deserves a wider audience than it probably has today across the open internet.

  26. Worth saying this site reads better than most paid newsletters I have tried, and a stop at a-nz31 confirmed that comparison, the bar for free content is often lower than for paid but this site clears the paid bar consistently and that says something about the editorial approach behind the work being published here regularly.

  27. Bookmark earned and folder updated to track this site separately, and a look at a-nz48 confirmed the folder upgrade was the right call, organising my reading list so that good sites do not get lost in a sea of casual bookmarks is something I do more carefully now and this site warranted its own spot.

  28. Appreciate that you did not pad this with fluff to hit a word count, the post says what it needs to say and stops, and a look at yalashostore did the same, brevity here feels intentional not lazy which is a distinction many writers miss completely sometimes when they are working under deadlines.

  29. Liked the natural conversational tone throughout, never stiff and never overly casual either, and a stop at qinlji kept that comfortable middle ground going, finding a tone that respects the reader without becoming distant or overly familiar is harder than it sounds and this site nails that balance consistently across many different pieces.

  30. Found the use of subheadings really helpful for scanning back through the post later, and a stop at samanthasmith kept that reader friendly approach going, navigation is something many blog writers ignore but small structural choices make a noticeable difference for someone returning to find a specific point again days or weeks later.

  31. A piece that left me thinking I had been undercaring about the topic, and a look at zoneengine reinforced that mild concern, content that raises the appropriate weight of a subject without being preachy about it is doing important work and this site is providing that gentle elevation of attention for me consistently.

  32. Looking at this from the perspective of someone tired of generic content the contrast is striking, and a look at convertersa maintained that distinctive feel, sites with strong editorial identity stand out against the bland background of algorithmic content and this one has clearly developed an identity worth recognising through careful attention.

  33. Genuine reaction is that I will probably think about this on and off for a few days, and a look at tonybarnes added fuel to that, the best content lingers in your head after you close the tab rather than evaporating immediately and this site clearly knows how to write that kind of memorable content.

  34. Now planning to write about the topic myself eventually using this post as a reference, and a look at riseflow would also serve in that future piece, content that becomes raw material for my own writing rather than just informing my reading is content with multiplicative value and this site is generating that multiplicative effect.

  35. Skipped the comments section but might come back to read it, and a stop at zonalzeny hinted at a quality reader community, sites where the comments are worth reading separately from the post are increasingly rare and signal a particular kind of audience that has grown around the editorial vision over time gradually.

  36. Glad to find a site whose links lead somewhere worth going rather than back to itself for SEO juice, and a stop at vipsportsclub kept that generous outbound feel, citing other peoples work with real respect rather than just for ranking signals is a sign of an honest operation worth supporting going forward.

  37. Now feeling mildly impressed in a way I do not quite remember feeling about a blog in a while, and a stop at dylcane extended that mild impression, content that produces specific positive emotional responses rather than just neutral information transfer is content with extra dimensions and this site has those extra dimensions clearly.

  38. Reading this between two meetings turned out to be the highlight of the morning, and a stop at breezelink continued that highlight quality, content that outshines the structured parts of a working day is doing something well beyond ordinary and this site has produced multiple such highlights for me already this week alone.

  39. The whole experience of reading this was pleasant from start to finish, no pop ups and no annoying interruptions, and a look at devdepot continued that clean experience, technical choices about page design matter for the reader and this site clearly cares about the small details that add up to comfort across multiple visits.

  40. Worth your time, that is the simplest endorsement I can give, and a stop at bedheada extends that endorsement across the rest of the site, this is one of those increasingly rare places that delivers on what it promises rather than over selling the content and under delivering on substance every time which I find frustrating elsewhere.

  41. I learned more from this short post than from longer articles I read earlier today, and a stop at tatersa added even more useful detail without going off topic, this site clearly knows how to keep things focused without sacrificing depth which is a hard balance to strike for any writer.

Deja un comentario