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Las estrellas jóvenes 'imitan' a los agujeros negros
Viernes, 26 Noviembre, 2010 Astronomía

Primer paso de un modelo unificado para todos los objetos astronómicos. , Un equipo internacional de astrónomos españoles y mexicanos, encabezado por el Consejo Superior de Investigaciones Científicas (CSIC), ha desarrollado un estudio que revela la estrecha conexión entre objetos tan diversos como...

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INTEGRAL helps unravel the tumultuous recent history of the solar neighbourhood
Viernes, 26 Noviembre, 2010 Astronomía

Just like archaeologists, who rely on radioactive carbon to date the organic remains from past epochs, astronomers have exploited the radioactive decay of an isotope of aluminium to estimate the age of stars in the nearby Scorpius-Centaurus association, the closest group of young and massive stars...

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Massive Galaxies Formed When Universe Was Young
Miércoles, 24 Noviembre, 2010 Astronomía

Some of the universe's most massive galaxies may have formed billions of years earlier than current scientific models predict, according to surprising new research led by Tufts University. The findings appear in the Astrophysical Journal online Nov. 24 and in print Dec. 10, 2010. ,

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Astronomers Probe 'Sandbar' Between Islands of Galaxies
Miércoles, 24 Noviembre, 2010 Astronomía

Astronomers have caught sight of an unusual galaxy that has illuminated new details about a celestial "sandbar" connecting two massive islands of galaxies. The research was conducted in part with NASA's Spitzer Space Telescope.

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Resuelven el misterio de la estrella pulsante
Miércoles, 24 Noviembre, 2010 Astronomía

Al descubrir el primer sistema doble de estrellas en que una Cefeida variable pulsante y otra estrella pasan una frente a la otra, un equipo de astrónomos internacionales ha resuelto un misterio de décadas. El inusual alineamiento de las órbitas de las dos estrellas en este sistema binario ha...

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Gaia's 'eyes' and 'brain' pass tests
Martes, 23 Noviembre, 2010 Astronomía

Another milestone in the development of ESA's Gaia spacecraft has been passed with the successful conclusion of two parallel test programmes during October. These tests demonstrated that Gaia's focal plane assembly (FPA) - the 'eyes' of the spacecraft - is structurally and functionally fit for...

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El Sol roba cometas a otras estrellas
Martes, 23 Noviembre, 2010 Astronomía

La próxima vez que se emocione al ver un cometa centelleando en el cielo nocturno, considere lo siguiente: lo que está experimentando es un placer robado. Usted está disfrutando del espectáculo a expensas de una estrella distante. ,

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Astronomers over the moon about Apertif!
Lunes, 22 Noviembre, 2010 Astronomía

Astronomers at ASTRON have, by simultaneously detecting the radio signals of two widely separated pulsars, demonstrated the feasibility of a new receiver technology that will have a great impact on radio astronomy. This achievement is part of the development of a new wide-field radio camera,...

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Making stars: Studies show how cosmic dust and gas shape galaxy evolution
Lunes, 22 Noviembre, 2010 Astronomía

Astronomers find cosmic dust annoying when it blocks their view of the heavens, but without it the universe would be devoid of stars. Cosmic dust is the indispensable ingredient for making stars and for understanding how primordial diffuse gas clouds assemble themselves into full–blown galaxies.

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New evidence for supernova-driven galactic fountains in the Milky Way
Viernes, 19 Noviembre, 2010 Astronomía

Observing the X-ray-bright gas in the halo of the Milky Way, ESA's XMM-Newton has gathered new data which favour a process involving fountains of hot gas in our Galaxy. Such a scenario, with the gas flowing from the galactic disc into the halo where it then condenses into cooler clouds and...

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Why Do the Ionized Gas Clouds Stream Out from Galaxies?
Viernes, 19 Noviembre, 2010 Astronomía

Using the Subaru Prime Focus Camera (Suprime-Cam) in their observations of the Coma Cluster, researchers from the National Astronomical Observatory of Japan (NAOJ), Hiroshima University, the University of Tokyo, and other institutes have discovered 14 galaxies accompanied by extended, ionized...

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NASA Spacecraft Sees Cosmic Snow Storm During Comet Encounter
Jueves, 18 Noviembre, 2010 Astronomía

The EPOXI mission's recent encounter with comet Hartley 2 provided the first images clear enough for scientists to link jets of dust and gas with specific surface features. NASA and other scientists have begun to analyze the images. , The EPOXI spacecraft revealed a cometary snow storm created by...

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Spitzer Reveals a Buried Explosion Sparked by a Galactic Train Wreck
Jueves, 18 Noviembre, 2010 Astronomía

Astronomers using NASA's Spitzer Space Telescope have found a stunning burst of star formation that beams out as much infrared light as an entire galaxy. The collision of two spiral galaxies has triggered this explosion, which is cloaked by dust that renders its stars nearly invisible in other...

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Descubren un planeta de otra galaxia
Jueves, 18 Noviembre, 2010 Astronomía

Canibalismo galáctico puso al alcance de los astrónomos un exoplaneta de origen extragaláctico. , Un exoplaneta orbitando una estrella que entró en nuestra Vía Láctea desde otra galaxia, fue detectado por un equipo europeo de astrónomos que emplearon el telescopio MPG/ESO de 2,2 metros en el...

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Hubble Captures New Life in an Ancient Galaxy
Jueves, 18 Noviembre, 2010 Astronomía

Elliptical galaxies were once thought to be aging star cities whose star-making heyday was billions of years ago. , But new observations with NASA's Hubble Space Telescope are helping to show that elliptical galaxies still have some youthful vigor left, thanks to encounters with smaller galaxies.

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