{"id":4182,"date":"2011-02-14T19:52:21","date_gmt":"2011-02-14T17:52:21","guid":{"rendered":"http:\/\/www.alpoma.net\/tecob\/?p=4182"},"modified":"2011-02-14T19:52:21","modified_gmt":"2011-02-14T17:52:21","slug":"el-cinturon-de-venus-y-la-sombra-terrestre","status":"publish","type":"post","link":"https:\/\/alpoma.net\/tecob\/?p=4182","title":{"rendered":"El cintur\u00f3n de Venus y la sombra terrestre"},"content":{"rendered":"<p>Todos lo hemos podido contemplar, aunque para que se convierta en un verdadero espect\u00e1culo celeste hace falta que las condiciones atmosf\u00e9ricas sean adecuadas. En muchas ocasiones, <strong>al amanecer o al atardecer<\/strong>, o cuando se produce un eclipse total de sol, <strong>el horizonte parece arder formando una gran franja rosada conocida como cintur\u00f3n de Venus<\/strong>. Bajo ella aparece siempre la amenazante oscuridad de la noche. Lo que no es tan conocido es que <strong>esa oscuridad es en realidad la sombra de nuestro planeta proyectada contra el cielo<\/strong>, creando un contraste muy llamativo, como se puede ver en las siguientes im\u00e1genes.<\/p>\n<p><a href=\"http:\/\/www.flickr.com\/photos\/carolune\/4279462159\/\" title=\"SALT and the Belt of Venus by carolune, on Flickr\"><img decoding=\"async\" src=\"http:\/\/farm5.static.flickr.com\/4054\/4279462159_50593750b0_z.jpg?zz=1\" width=\"620\" alt=\"SALT and the Belt of Venus\" \/><\/a><br \/>\nEl cintur\u00f3n de Venus y la sombra terrestre en una imagen de <a href=\"http:\/\/www.flickr.com\/photos\/carolune\/4279462159\/\">Carolina \u00d6dman<\/a>. (CC-By)<\/p>\n<p><a href=\"http:\/\/www.flickr.com\/photos\/andrew_clarke\/4228268246\/\" title=\"Belt of Venus and Earth's Shadow by voithite, on Flickr\"><img decoding=\"async\" src=\"http:\/\/farm5.static.flickr.com\/4046\/4228268246_5179f5a362_z.jpg?zz=1\" width=\"620\" alt=\"Belt of Venus and Earth's Shadow\" \/><\/a><br \/>\nEl cintur\u00f3n de Venus y la sombra de la Tierra, fotograf\u00eda de <a href=\"http:\/\/www.flickr.com\/photos\/9717299@N07\/4228268246\/\">Andrew Clarke<\/a>. (CC-By)<\/p>\n<p><a href=\"http:\/\/www.flickr.com\/photos\/gak\/364299210\/\" title=\"Belt of Venus over cotton candy clouds. by gak, on Flickr\"><img decoding=\"async\" src=\"http:\/\/farm1.static.flickr.com\/160\/364299210_6fa325a71f_z.jpg?zz=1\" width=\"620\" alt=\"Belt of Venus over cotton candy clouds.\" \/><\/a><br \/>\nEl cintur\u00f3n de Venus, entre el cielo diurno y la sombra de la Tierra, fotograf\u00eda de <a href=\"http:\/\/www.flickr.com\/photos\/18095953@N00\/364299210\">Gary A. K.<\/a> (CC-By)<\/p>\n<p>| V\u00eda <a href=\"http:\/\/www.meteored.com\/ram\/13004\/la-sombra-de-la-tierra\/\">Meteoted &#8211; RAM<\/a> |<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Todos lo hemos podido contemplar, aunque para que se convierta en un verdadero espect\u00e1culo celeste hace falta que las condiciones atmosf\u00e9ricas sean adecuadas. En muchas ocasiones, al amanecer o al <a class=\"mh-excerpt-more\" href=\"https:\/\/alpoma.net\/tecob\/?p=4182\" title=\"El cintur\u00f3n de Venus y la sombra terrestre\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":10945,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-4182","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geo"],"jetpack_featured_media_url":"https:\/\/alpoma.net\/tecob\/wp-content\/uploads\/2011\/02\/4279462159_50593750b0_z.jpg","jetpack_shortlink":"https:\/\/wp.me\/p93Dc1-15s","jetpack-related-posts":[{"id":774,"url":"https:\/\/alpoma.net\/tecob\/?p=774","url_meta":{"origin":4182,"position":0},"title":"Autopista espacial","author":"alpoma","date":"7 septiembre 2007","format":false,"excerpt":"Dentro de no mucho tiempo, encontrar un hueco en \u00f3rbita geoestacionaria para colocar un sat\u00e9lite artificial puede convertirse en algo problem\u00e1tico. Saturaci\u00f3n de artefactos, tal es la causa de que el m\u00e1s preciado de los espacios circunterrestres tenga problemas de \"circulaci\u00f3n\". Eso por no hablar del famoso \"anillo\" de chatarra,\u2026","rel":"","context":"En \u00abGeo\u00bb","block_context":{"text":"Geo","link":"https:\/\/alpoma.net\/tecob\/?cat=5"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":805,"url":"https:\/\/alpoma.net\/tecob\/?p=805","url_meta":{"origin":4182,"position":1},"title":"Un encuentro con Venus","author":"alpoma","date":"26 diciembre 2007","format":false,"excerpt":"Ahora que las aguas andan muy revueltas en el mundo de la astron\u00e1utica, me he acordado de un viejo proyecto con el que se pens\u00f3 enviar una tripulaci\u00f3n de astronautas a un encuentro con el planeta Venus. Se han dise\u00f1ado muchas naves y misiones a lo largo de la corta\u2026","rel":"","context":"En \u00abObsolescencia\u00bb","block_context":{"text":"Obsolescencia","link":"https:\/\/alpoma.net\/tecob\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2007\/12\/2138890618_3085b3f5fe_o.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2007\/12\/2138890618_3085b3f5fe_o.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2007\/12\/2138890618_3085b3f5fe_o.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":12376,"url":"https:\/\/alpoma.net\/tecob\/?p=12376","url_meta":{"origin":4182,"position":2},"title":"The Expanse, una space opera \u00abplausible\u00bb","author":"alpoma","date":"4 noviembre 2016","format":false,"excerpt":"Acabo de terminar de ver la primera temporada de la serie de ciencia ficci\u00f3n The Expanse en Netflix (originalmente es una serie de SyFy). No suelo emplear el blog para comentar este tipo de cuestiones, salvo que algo me haya llamado mucho la atenci\u00f3n, y as\u00ed ha sido en este\u2026","rel":"","context":"En \u00abPersonal\u00bb","block_context":{"text":"Personal","link":"https:\/\/alpoma.net\/tecob\/?cat=2"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2016\/11\/the_expanse_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2016\/11\/the_expanse_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2016\/11\/the_expanse_1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2016\/11\/the_expanse_1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2016\/11\/the_expanse_1.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2016\/11\/the_expanse_1.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":688,"url":"https:\/\/alpoma.net\/tecob\/?p=688","url_meta":{"origin":4182,"position":3},"title":"Astroingenier\u00eda","author":"alpoma","date":"19 marzo 2007","format":false,"excerpt":"Nada de grandes puentes, ni islas artificiales o aeropuertos flotantes, rascacielos imponentes o portaaviones del tama\u00f1o de una peque\u00f1a ciudad... lo verdaderamente grande en ingenier\u00eda va mucho m\u00e1s all\u00e1 de esas \"peque\u00f1eces\". Puede plantearse c\u00f3mo modificar un continente entero y estaremos hablando de macroingenier\u00eda, o bien pensar en alterar un\u2026","rel":"","context":"En \u00abGeo\u00bb","block_context":{"text":"Geo","link":"https:\/\/alpoma.net\/tecob\/?cat=5"},"img":{"alt_text":"Rising Worlds II","src":"https:\/\/i0.wp.com\/farm1.static.flickr.com\/37\/78951029_365d005b5b_m.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":437,"url":"https:\/\/alpoma.net\/tecob\/?p=437","url_meta":{"origin":4182,"position":4},"title":"Fotografiando el infierno","author":"alpoma","date":"11 abril 2006","format":false,"excerpt":"En tiempos se pens\u00f3 que Venus era un paraiso, un mundo acu\u00e1tico que ocultaba sus secretos tras un impenetrable escudo de nubes. Algo de raz\u00f3n se ten\u00eda, porque las nubes oscurecen la superficie y hasta \u00e9pocas recientes no se descubri\u00f3 la verdad, a saber, que Venus es lo m\u00e1s parecido\u2026","rel":"","context":"En \u00abGeo\u00bb","block_context":{"text":"Geo","link":"https:\/\/alpoma.net\/tecob\/?cat=5"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2006\/04\/127038618_2c4a3b033a_o.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2006\/04\/127038618_2c4a3b033a_o.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2006\/04\/127038618_2c4a3b033a_o.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":8570,"url":"https:\/\/alpoma.net\/tecob\/?p=8570","url_meta":{"origin":4182,"position":5},"title":"El vuelo al planeta Venus de Robert Condit (1928)","author":"alpoma","date":"16 octubre 2013","format":false,"excerpt":"Cuando los viajes al espacio no eran sino algo que s\u00f3lo se pod\u00eda contemplar en coloridas revistas de ciencia ficci\u00f3n y en los c\u00e1lculos de algunos apasionados visionarios, surgieron algunos aventureros, con m\u00e1s ilusi\u00f3n que cerebro, que quisieron saltar por encima de las dificultades y salir pitando hacia nuestros planetas\u2026","rel":"","context":"En \u00abObsolescencia\u00bb","block_context":{"text":"Obsolescencia","link":"https:\/\/alpoma.net\/tecob\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2013\/10\/condit.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2013\/10\/condit.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/alpoma.net\/tecob\/wp-content\/uploads\/2013\/10\/condit.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=\/wp\/v2\/posts\/4182","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4182"}],"version-history":[{"count":0,"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=\/wp\/v2\/posts\/4182\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=\/wp\/v2\/media\/10945"}],"wp:attachment":[{"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alpoma.net\/tecob\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}