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Helium rain on Jupiter explains lack of neon in atmosphere
Lunes, 22 Marzo, 2010 Astronomía

On Earth, helium is a gas used to float balloons, as in the movie Up. In the interior of Jupiter, however, conditions are so strange that, according to predictions by University of California, Berkeley, scientists, helium condenses into droplets and falls like rain. Helium rain was earlier proposed...

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APEX Snaps First Close-up of Star Factories in Distant Universe
Domingo, 21 Marzo, 2010 Astronomía

For the first time, astronomers have made direct measurements of the size and brightness of regions of star-birth in a very distant galaxy, thanks to a chance discovery with the APEX telescope. The galaxy is so distant, and its light has taken so long to reach us, that we see it as it was 10...

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Cassini Shows Saturnian Roller Derby, Strange Weather
Jueves, 18 Marzo, 2010 Astronomía

From our vantage point on Earth, Saturn may look like a peaceful orb with rings worthy of a carefully raked Zen garden, but NASA's Cassini spacecraft has been shadowing the gas giant long enough to see that the rings are a rough and tumble roller derby. It has also revealed that the planet itself...

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Planck desvela un telón de fondo cósmico formado por polvo frío
Miércoles, 17 Marzo, 2010 Astronomía

La última imagen obtenida por el satélite Planck de la ESA muestra filamentos gigantes de polvo frío que se extienden a lo largo de nuestra Galaxia. El análisis de estas estructuras podría ayudar a determinar las fuerzas que dan forma a nuestra Galaxia y que provocan la formación de las estrellas.

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NASA's Spitzer Unearths Primitive Black Holes
Miércoles, 17 Marzo, 2010 Astronomía

Astronomers have come across what appear to be two of the earliest and most primitive supermassive black holes known. The discovery, based largely on observations from NASA's Spitzer Space Telescope, will provide a better understanding of the roots of our universe, and how the very first black...

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Mancha de Júpiter es Vista Brillando
Martes, 16 Marzo, 2010 Astronomía

Científicos Logran Primer Vistazo al Clima de la Mayor Tormenta del Sistema Solar Nuevas e innovadoras imágenes térmicas obtenidas con el Very Large Telescope de ESO y otros poderosos telescopios basados en Tierra revelan remolinos de aire más cálidos y regiones más frías nunca antes vistas dentro...

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Imágenes de la aproximación a Fobos
Lunes, 15 Marzo, 2010 Astronomía

Hoy se han publicado las imágenes obtenidas por el satélite Mars Express durante su aproximación a Fobos el pasado 7 de Marzo de 2010. Estas fotografías muestran la superficie de esta luna rocosa de Marte con un exquisito nivel de detalle, con una resolución de 4.4 metros por píxel. Estas imágenes...

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Super Supernova: White Dwarf Star System Exceeds Mass Limit
Lunes, 15 Marzo, 2010 Astronomía

An international team led by Yale University has, for the first time, measured the mass of a type of supernova thought to belong to a unique subclass and confirmed that it surpasses what was believed to be an upper mass limit. Their findings, which appear online and will be published in an upcoming...

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Una "corriente de fuego" en el Sol adquiere velocidad
Viernes, 12 Marzo, 2010 Astronomía

Una corriente de fuego masiva en el Sol comenzó a moverse a altas velocidades, sorprendiendo así a investigadores y desafiando algunos modelos existentes del ciclo solar. ¿Qué pretende el Sol ahora? En la edición del día de hoy de la revista Science (Ciencia, en idioma español), el físico solar...

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Cassini Data Show Ice and Rock Mixture Inside Titan
Jueves, 11 Marzo, 2010 Astronomía

By precisely tracking NASA's Cassini spacecraft on its low swoops over Saturn's moon Titan, scientists have determined the distribution of materials in the moon's interior. The subtle gravitational tugs they measured suggest the interior has been too cold and sluggish to split completely into...

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Mysterious Cosmic 'Dark Flow' Tracked Deeper into Universe
Miércoles, 10 Marzo, 2010 Astronomía

Distant galaxy clusters mysteriously stream at a million miles per hour along a path roughly centered on the southern constellations Centaurus and Hydra. A new study led by Alexander Kashlinsky at NASA's Goddard Space Flight Center in Greenbelt, Md., tracks this collective motion -- dubbed the dark...

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Study validates general relativity on cosmic scale, existence of dark matter
Miércoles, 10 Marzo, 2010 Astronomía

An analysis of more than 70,000 galaxies by University of California, Berkeley, University of Zurich and Princeton University physicists demonstrates that the universe – at least up to a distance of 3.5 billion light years from Earth – plays by the rules set out 95 years ago by Albert Einstein in...

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Most extreme white dwarf binary system found with orbit of just 5 minutes
Martes, 9 Marzo, 2010 Astronomía

An international team of astronomers, including Professor Tom Marsh and Dr Danny Steeghs from the University of Warwick, have shown that the two stars in the binary HM Cancri definitely revolve around each other in a mere 5.4 minutes. This makes HM Cancri the binary star with by far the shortest...

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Catastrophic event' behind the halt of star birth in early galaxy formation
Martes, 9 Marzo, 2010 Astronomía

Scientists have found evidence of a catastrophic event they believe was responsible for halting the birth of stars in a galaxy in the early Universe. They report their results in the journal Monthly Notices of the Royal Astronomical Society.

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Culmina con éxito la máxima aproximación a la superficie de Fobos
Lunes, 8 Marzo, 2010 Astronomía

Mars Express se encontró con Fobos el pasado miércoles por la noche, sobrevolando su superficie a tan sólo 67 km de altitud, lo más cerca que cualquier objeto hecho por el ser humano se haya acercado a esta enigmática luna de Marte. Los datos recogidos durante esta aproximación podrían ayudar a...

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