{"id":17390,"date":"2026-02-19T21:34:10","date_gmt":"2026-02-19T21:34:10","guid":{"rendered":"http:\/\/69974cdc123f67dcdea40b36"},"modified":"2026-02-19T21:34:10","modified_gmt":"2026-02-19T21:34:10","slug":"confirman-por-primera-vez-una-galaxia-invisible-esta-conformada-en-un-99-9-por-materia-oscura","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=17390","title":{"rendered":"Confirman por primera vez una galaxia invisible: est\u00e1 conformada en un 99.9% por materia oscura"},"content":{"rendered":"<p>Astr\u00f3nomos acaban de identificar lo que parece ser una aut\u00e9ntica anomal\u00eda c\u00f3smica: una galaxia tan tenue y con tan pocas estrellas visibles que, seg\u00fan los c\u00e1lculos, solo puede existir si el 99.9% de su masa est\u00e1 hecha de materia oscura. El 0.1% restante corresponde a materia convencional.<\/p>\n<p>Aunque se encuentra a unos 300 millones de a\u00f1os luz, la galaxia es pr\u00e1cticamente <a href=\"https:\/\/es.wired.com\/articulos\/la-via-lactea-podria-estar-rodeada-de-pequenas-galaxias-invisibles\">invisible<\/a>. Solo destacan cuatro c\u00famulos globulares, peque\u00f1as concentraciones de estrellas que parecen vecindarios aislados en medio del vac\u00edo. Durante a\u00f1os, estos enjambres estelares del c\u00famulo de Perseo se consideraron objetos independientes.<\/p>\n<figure class=\"AssetEmbedWrapper-fkZDUs kHRAYC asset-embed\">\n<div class=\"AssetEmbedAssetContainer-eEeytc eRSvCP asset-embed__asset-container\"><span class=\"SpanWrapper-zEXFr koTknX responsive-asset AssetEmbedResponsiveAsset-cIfZLr fHIkTW asset-embed__responsive-asset\"><picture class=\"ResponsiveImagePicture-cGZhnX jwYQWO AssetEmbedResponsiveAsset-cIfZLr fHIkTW asset-embed__responsive-asset responsive-image\"><img decoding=\"async\" alt=\"C\u00famulos globulares en el C\u00famulo de Perseo.\" loading=\"lazy\" class=\"ResponsiveImageContainer-eNxvmU cfBbTk responsive-image__image\" srcset=\"https:\/\/sarmiento24h.com\/wp-content\/uploads\/2026\/02\/confirman-por-primera-vez-una-galaxia-invisible-esta-conformada-en-un-99-9-por-materia-oscura.jpg,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 120w, https:\/\/media.es.wired.com\/photos\/69976ddb958d6e55e4da233d\/master\/w_240,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 240w, https:\/\/media.es.wired.com\/photos\/69976ddb958d6e55e4da233d\/master\/w_320,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 320w, https:\/\/media.es.wired.com\/photos\/69976ddb958d6e55e4da233d\/master\/w_640,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 640w, https:\/\/media.es.wired.com\/photos\/69976ddb958d6e55e4da233d\/master\/w_960,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 960w, https:\/\/media.es.wired.com\/photos\/69976ddb958d6e55e4da233d\/master\/w_1280,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 1280w, https:\/\/media.es.wired.com\/photos\/69976ddb958d6e55e4da233d\/master\/w_1600,c_limit\/STScI-01K7PSFCSX5NBNBT6778SKHZ2D.jpg 1600w\" sizes=\"100vw\" src=\"https:\/\/sarmiento24h.com\/wp-content\/uploads\/2026\/02\/confirman-por-primera-vez-una-galaxia-invisible-esta-conformada-en-un-99-9-por-materia-oscura.jpg\"><\/picture><\/span><\/div>\n<div class=\"CaptionWrapper-jYrTxZ byeLF caption AssetEmbedCaption-fyuOdR jpkaNC asset-embed__caption\" data-testid=\"caption-wrapper\" readability=\"6.5\"><span class=\"BaseText-eqOrNE CaptionText-brNLzD hZRRZk fGraOh caption__text caption__text\" readability=\"28\"><\/p>\n<p>Esta galaxia solo es visible por cuatro c\u00famulos globulares y ellos conforman el 16% de todo su brillo. Los cient\u00edficos piensan que el 99.9% de esta galaxia es materia oscura.<\/p>\n<p><\/span><span class=\"BaseText-eqOrNE CaptionCredit-eowWKH bjnqoI gxwcqg caption__credit caption__credit\">NASA\/ESA<\/span><\/div>\n<\/figure>\n<p>Ahora, tras un an\u00e1lisis exhaustivo, un estudio publicado en <em>The Astrophysical Journal Letters<\/em> presenta evidencias s\u00f3lidas de que esos c\u00famulos globulares forman parte de una misma galaxia dominada por materia oscura. Por ahora recibe el nombre provisional de CDG\u20112 (Candidate Dark Galaxy\u20112) y se ha convertido en la primera galaxia detectada \u00fanicamente a trav\u00e9s de sus fragmentos m\u00e1s brillantes.<\/p>\n<p>Los autores combinaron observaciones de los telescopios Hubble, Euclid y Subaru, tres de los instrumentos m\u00e1s potentes disponibles, para estudiar los cuatro c\u00famulos. Al unir sus datos, lograron revelar un brillo difuso y extremadamente d\u00e9bil alrededor de ellos. Esa luz residual constituye una se\u00f1al clara de que existe una galaxia subyacente tan tenue que los sensores la hab\u00edan pasado por alto.<\/p>\n<h2>Galaxias dominadas por materia oscura<\/h2>\n<p>El an\u00e1lisis preliminar indica que CDG\u20112 posee una luminosidad total equivalente a unos 6 millones de soles. Los cuatro c\u00famulos globulares aportan alrededor del 16% de ese brillo, una proporci\u00f3n inusualmente alta. Esta distribuci\u00f3n sugiere que, pese a su escasa luz, la galaxia est\u00e1 gravitacionalmente bien \u201cunida\u201d, lo que implica un halo de materia oscura especialmente denso. Los astr\u00f3nomos estiman que <a href=\"https:\/\/es.wired.com\/galerias\/cinco-pruebas-de-la-existencia-de-la-materia-oscura\">esta estructura invisible<\/a> representa entre el 99.94% y el 99.98% de la masa total.<\/p>\n<p>Seg\u00fan los modelos actuales, la materia oscura constituye entre el 70 y 80% de la masa del universo. Aunque a\u00fan <a href=\"https:\/\/es.wired.com\/galerias\/que-es-la-materia-oscura-y-otros-9-misterios-que-los-astronomos-no-han-podido-resolver\">desconocemos la naturaleza exacta de sus part\u00edculas<\/a>, porque no emiten ni interact\u00faan con la luz, su influencia gravitacional es evidente en escalas c\u00f3smicas.<\/p>\n<p>No sorprende que las galaxias est\u00e9n dominadas por materia oscura; de hecho, su presencia explica la estabilidad y el movimiento de las estrellas en sistemas como la V\u00eda L\u00e1ctea. Por ejemplo, los \u00faltimos modelos de comportamiento estelar se\u00f1alan que nuestra <a href=\"https:\/\/es.wired.com\/articulos\/nadie-esperaba-esto-asi-se-agrupa-la-materia-oscura-alrededor-de-la-via-lactea\">galaxia est\u00e1 cubierta por un halo<\/a> cuya proporci\u00f3n es de 90% materia oscura, aproximadamente.<\/p>\n<p>Sin embargo, el caso de CDG\u20112 es extremo: una galaxia casi sin estrellas, sostenida casi por completo por un halo invisible. Este tipo de objetos, las llamadas \u201cgalaxias oscuras\u00bb, empieza a aparecer en los registros astron\u00f3micos. M\u00e1s all\u00e1 de su rareza, los cient\u00edficos las buscan porque funcionan como laboratorios naturales para explorar los l\u00edmites de la materia oscura y poner a prueba los modelos actuales de formaci\u00f3n gal\u00e1ctica.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Astr\u00f3nomos acaban de identificar lo que parece ser una aut\u00e9ntica anomal\u00eda c\u00f3smica: una galaxia tan tenue y con tan pocas estrellas visibles que, seg\u00fan los c\u00e1lculos, solo puede existir si el 99.9% de su masa est\u00e1 hecha de materia oscura. El 0.1% restante corresponde a materia convencional. Aunque se encuentra a unos 300 millones de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":17391,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[46],"tags":[],"class_list":["post-17390","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Confirman por primera vez una galaxia invisible: est\u00e1 conformada en un 99.9% por materia oscura - Sarmiento24h<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sarmiento24h.com\/?p=17390\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Confirman por primera vez una galaxia invisible: est\u00e1 conformada en un 99.9% por materia oscura - Sarmiento24h\" \/>\n<meta property=\"og:description\" content=\"Astr\u00f3nomos acaban de identificar lo que parece ser una aut\u00e9ntica anomal\u00eda c\u00f3smica: una galaxia tan tenue y con tan pocas estrellas visibles que, seg\u00fan los c\u00e1lculos, solo puede existir si el 99.9% de su masa est\u00e1 hecha de materia oscura. 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