{"id":79133,"date":"2026-03-23T19:07:44","date_gmt":"2026-03-23T19:07:44","guid":{"rendered":"http:\/\/69c161bd93441771d1237392"},"modified":"2026-03-23T19:07:44","modified_gmt":"2026-03-23T19:07:44","slug":"imagenes-de-la-nebulosa-planetaria-pmr-1-que-recuerda-a-un-craneo-expuesto","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=79133","title":{"rendered":"Im\u00e1genes de la nebulosa planetaria PMR\u202f1 que recuerda a un cr\u00e1neo expuesto"},"content":{"rendered":"

Las estrellas masivas, con m\u00e1s de ocho veces la masa del Sol, suelen terminar su vida de forma espectacular, generalmente en una explosi\u00f3n de supernova. Cuando las estrellas<\/a> con tanta masa se acercan al final de su vida, el helio, subproducto de la fusi\u00f3n del hidr\u00f3geno, se acumula en su n\u00facleo, formando un c\u00famulo. Posteriormente, la fusi\u00f3n del hidr\u00f3geno se desplaza hacia el exterior del n\u00facleo de helio, lo que provoca que la estrella se expanda, su temperatura superficial disminuya y adquiera un tono rojizo. Las estrellas que han alcanzado esta etapa de evoluci\u00f3n se denominan gigantes rojas.<\/a><\/p>\n

\n
\"La<\/picture><\/span><\/div>\n
<\/p>\n

Estrella gigante roja \u00abCW Leonis\u00bb. Se encuentra a unos 400 a\u00f1os luz de la Tierra, en direcci\u00f3n a la constelaci\u00f3n de Leo. La \u00abtelara\u00f1a\u00bb de color rojo anaranjado es una nube de polvo de holl\u00edn de carbono que rodea a la estrella moribunda. Se cree que procede de la capa exterior, rica en carbono, que ha sido drenada por la eyecci\u00f3n de masa.<\/p>\n

<\/span>Fotograf\u00eda: ESA\/HUBBLE, NASA, TOSHIYA UETA, HYOSUN KIM<\/span><\/div>\n<\/figure>\n

\u00bfQu\u00e9 es una nebulosa planetaria y por qu\u00e9 la vemos brillar?<\/h2>\n

Durante esta etapa de gigante roja<\/a>, una gran cantidad de material es expulsado de las capas exteriores extendidas de la estrella. Este fen\u00f3meno, llamado \u00abeyecci\u00f3n de masa\u00bb, se vuelve cada vez m\u00e1s pronunciado a medida que la estrella se acerca a su muerte.<\/a><\/p>\n

Mediante la eyecci\u00f3n de masa, la estrella finalmente pierde sus capas exteriores, su reacci\u00f3n de fusi\u00f3n nuclear cesa y queda un n\u00facleo desnudo. Este n\u00facleo desnudo, compuesto principalmente de carbono y ox\u00edgeno, es una enana blanca<\/a>, esencialmente el cad\u00e1ver de una estrella.<\/p>\n

Una estrella central moribunda emite luz ultravioleta, iluminando el gas expulsado durante la eyecci\u00f3n de masa y provocando que brille intensamente. Se trata de una nebulosa planetaria<\/a>, y su belleza le ha valido el apodo de \u00abjoya del universo\u00bb. Sin embargo, la vida \u00fatil de estas es corta, estimada en tan solo unos pocos miles o decenas de miles de a\u00f1os.<\/p>\n

\n
\"La<\/picture><\/span><\/div>\n
<\/p>\n

La nebulosa del Anillo, conocida oficialmente como Messier 57, es una nebulosa planetaria t\u00edpica. Se encuentra a unos 2,600 a\u00f1os luz de la Tierra, en direcci\u00f3n a la constelaci\u00f3n de Lyra.<\/p>\n

<\/span>Fotograf\u00eda: NASA, ESA AND THE HUBBLE HERITAGE (STSCI\/AURA); ESA<\/span><\/div>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"

Las estrellas masivas, con m\u00e1s de ocho...<\/p>\n","protected":false},"author":1,"featured_media":79134,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[46],"tags":[],"class_list":["post-79133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"\nIm\u00e1genes de la nebulosa planetaria PMR\u202f1 que recuerda a un cr\u00e1neo expuesto - 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