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Study Reveals a Remarkable Symmetry in Black Hole Jets
Jueves, 13 Diciembre, 2012 Astronomía

Black holes range from modest objects formed when individual stars end their lives to behemoths billions of times more massive that rule the centers of galaxies. A new study using data from NASA's Swift satellite and Fermi Gamma-ray Space Telescope shows that high-speed jets launched from active...

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Microquasar Found in Neighbor Galaxy, Tantalizing Scientists
Miércoles, 12 Diciembre, 2012 Astronomía

For the first time, astronomers have found a microquasar -- a black hole devouring material from a companion star -- in a galaxy beyond our own Milky Way. The object, pumping out X-rays and bright bursts of radio waves, was found in the Andromeda Galaxy, 2.5 million light-years from Earth.

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NASA'S Hubble Provides First Census of Galaxies Near Cosmic Dawn
Miércoles, 12 Diciembre, 2012 Astronomía

Using NASA's Hubble Space Telescope, astronomers have uncovered a previously unseen population of seven primitive galaxies that formed more than 13 billion years ago, when the universe was less than 4 percent of its present age. The deepest images to date from Hubble yield the first statistically...

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Astronomers Catch Jet from Binge-Eating Black Hole
Miércoles, 12 Diciembre, 2012 Astronomía

Back in January, a new X-ray source flared and rapidly brightened in the Andromeda galaxy (M31), located 2.5 million light-years away. Classified as an ultraluminous X-ray source (ULX), the object is only the second ever seen in M31 and became the target of an intense observing campaign by orbiting...

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Un gigante de 24 brazos para estudiar las fases iniciales de la vida de las galaxias
Miércoles, 12 Diciembre, 2012 Astronomía

El instrumento KMOS, instalado con éxito en el telescopio VLT (Very Large Telescope) de ESO , Un nuevo y potente instrumento llamado KMOS acaba de ser probado con éxito en el telescopio VLT (Very Large Telescope) de ESO, en el Observatorio Paranal, en Chile. KMOS es un instrumento único, ya que...

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Light Pollution Report Reveals Environmental Impacts
Miércoles, 12 Diciembre, 2012 Astronomía

While awareness of man-made pollutants and their environmental impact may be rising exponentially, one source of contamination remains largely unaddressed. Light pollution is the wasteful and obtrusive emission of artificial light, and it can have disastrous consequences for the affected local...

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¿Cómo eran las primeras estrellas del Universo?
Martes, 11 Diciembre, 2012 Astronomía

Recientes observaciones con el GTC nos acercan un paso más a las condiciones del Universo primitivo , Las primeras estrellas que se formaron tras el Big Bang y la Edad Oscura eran muy masivas, y jugaron un papel protagonista durante el periodo de reionización. A partir de ese momento los fotones...

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An older Vega: New insights about the star all others are measured by
Martes, 11 Diciembre, 2012 Astronomía

Vega, a star astronomers have used as a touchstone to measure other stars' brightness for thousands of years, may be more than 200 million years older than previously thought. That's according to new findings from the University of Michigan.

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Se esclarece la evolución química del universo a lo largo de los últimos diez mil millones de años
Martes, 11 Diciembre, 2012 Astronomía

Un estudio, liderado por el Instituto de Astrofísica de Andalucía (IAA-CSIC), analiza veinte mil galaxias comprendidas en el muestreo zCOSMOS. Concluye que las galaxias más distantes tienen menor proporción de elementos pesados que las del universo local, lo que confirma el modelo jerárquico de...

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Little Telescope Spies Gigantic Galaxy Clusters
Jueves, 6 Diciembre, 2012 Astronomía

Our solar system, with its colorful collection of planets, asteroids and comets, is a fleck in the grander cosmos. Hundreds of billions of solar systems are thought to reside in our Milky Way galaxy, which is itself just a drop in a sea of galaxies. The rarest and largest of galaxy groupings,...

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When the first stars blinked on
Miércoles, 5 Diciembre, 2012 Astronomía

The very first stars may have turned on when the universe was 750 million years old. , As far back in time as astronomers have been able to see, the universe has had some trace of heavy elements, such as carbon and oxygen. These elements, originally churned from the explosion of massive stars,...

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Astronomers Discover and "Weigh" Infant Solar System
Miércoles, 5 Diciembre, 2012 Astronomía

Astronomers have found the youngest still-forming solar system yet seen, an infant star surrounded by a swirling disk of dust and gas more than 450 light-years from Earth in the constellation Taurus. The star currently has about one-fifth the mass of the Sun, but, the scientists say, will likely...

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¿Qué sabemos de los meteoritos?
Miércoles, 5 Diciembre, 2012 Astronomía

Nuevo libro de divulgación del CSIC , Cada año llegan a la Tierra entre cuarenta y ochenta mil toneladas de materia interplanetaria. Se trata de objetos que generalmente se han desprendido de asteroides, cometas o cuerpos planetarios, como la Luna o Marte, y que al entrar en contacto con la...

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Wide Binary Stars: Long-Distance Stellar Relationships
Miércoles, 5 Diciembre, 2012 Astronomía

Using computer simulations, scientists from Hawaii and Finland have figured out how wide binary stars—two stars that orbit each other at a distance up to a light-year—form.

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NASA's GRAIL Creates Most Accurate Moon Gravity Map
Miércoles, 5 Diciembre, 2012 Astronomía

Twin NASA probes orbiting Earth's moon have generated the highest resolution gravity field map of any celestial body. The new map, created by the Gravity Recovery and Interior Laboratory (GRAIL) mission, is allowing scientists to learn about the moon's internal structure and composition in...

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