{"ok":true,"nota":{"id":"f463b903f3bba963","slug":"la-nasa-explica-por-que-el-asteroide-bennu-se-enfria-tan-rapido-f463b9","titulo":"La NASA explica por qué el asteroide Bennu se enfría tan rápido","resumen":"Científicos de la NASA encontraron la razón por la que el asteroide Bennu pierde calor tan rápido pese a estar cubierto de rocas enormes. Muestras traídas a la Tierra revelan que sus piedras tienen grietas ocultas.","fuente":"sciencedaily","fuenteNombre":"ScienceDaily","color":"#0b6ea8","autor":"","url":"https://www.sciencedaily.com/releases/2026/10/261018205101.htm","imagen":"/hoy/portada/f463b903f3bba963","tema":"ciencia","subtemas":["astronomia","asteroides","bennu","exploracion espacial","geologia planetaria"],"entidades":["NASA","asteroide Bennu"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-20T02:23:00.000Z","indexTs":"2026-10-20T13:04:41.537Z","hash":"f9ca13b73ef04527d743eab1bad59a15ae1b453809d3620afd312897c480fccf","tsa":{"time":"Oct 20 13:06:25 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Las rocas de Bennu tienen grietas internas que no se veían desde afuera, y eso explica que pierdan calor tan velozmente. Es un dato que ayuda a entender cómo se comportan los cuerpos pequeños del sistema solar. Para quien no sigue la astronomía, sirve para ver que traer muestras reales cambia las respuestas que dan los telescopios. La explicación sale de muestras analizadas en laboratorio, lo que la hace más sólida que una estimación a distancia.","quienFirma":"ScienceDaily","confianza":"revisado","consulta":null},"sello":{"hash":"f9ca13b73ef04527d743eab1bad59a15ae1b453809d3620afd312897c480fccf","sello":"293273aa67717bcc3f854c4ea912cafa335e9ee20f8bf198e62833bab9afac57","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6569018,"aleatorio":"2403864da51bdd2a519360fd93e59fb5116563c5aaa8cd0a09e11cda13caaf48","tiempo":"2026-10-20T13:06:00.000Z"},"nist":{"cadena":2,"pulso":1991714,"salida":"B8848CECEB3DFDADAC825F4BEBDFF32AE2943FF3A9313DFB4B26C523DFDC5167BEA36151B2E895AB6BBE00295D1F2C46621B7595D8FD52F7309278148B7850D5","tiempo":"2026-10-20T13:05:00.000Z"},"noAntes":"2026-10-20T13:06:00.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 20 13:06:25 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"NASA solves a strange mystery hidden inside asteroid Bennu’s boulders","descripcion":"NASA scientists have finally uncovered why asteroid Bennu loses heat so quickly despite being covered in massive boulders. Samples returned to Earth reveal that its rocks are filled with hidden cracks, solving a mystery that has puzzled researchers for years.","pubDate":"Mon, 19 Oct 2026 22:23:00 EDT","url":"https://www.sciencedaily.com/releases/2026/10/261018205101.htm"},"indexado":"2026-10-20T13:04:41.537Z"}}