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Astronomía

The Shocking Behavior of a Speedy Star
Jueves, 20 Febrero, 2014 Astronomía

Roguish runaway stars can have a big impact on their surroundings as they plunge through the Milky Way galaxy. Their high-speed encounters shock the galaxy, creating arcs, as seen in this newly released image from NASA's Spitzer Space Telescope. In this case, the speedster star is known as Kappa...

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With A Deadly Embrace, 'Spidery' Pulsars Consume Their Mates
Jueves, 20 Febrero, 2014 Astronomía

Black widow spiders and their Australian cousins, known as redbacks, are notorious for their tainted love, expressed as an unsettling tendency to kill and devour their male partners. Astronomers have noted similar behavior among two rare breeds of binary system that contain rapidly spinning neutron...

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NASA Researcher Finds Planet-Sized Space Weather Explosions at Venus
Jueves, 20 Febrero, 2014 Astronomía

Researchers recently discovered that a common space weather phenomenon on the outskirts of Earth's magnetic bubble, the magnetosphere, has much larger repercussions for Venus. The giant explosions, called hot flow anomalies, can be so large at Venus that they're bigger than the entire planet and...

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NASA's NuSTAR Untangles Mystery of How Stars Explode
Miércoles, 19 Febrero, 2014 Astronomía

One of the biggest mysteries in astronomy, how stars blow up in supernova explosions, finally is being unraveled with the help of NASA's Nuclear Spectroscopic Telescope Array (NuSTAR). The high-energy X-ray observatory has created the first map of radioactive material in a supernova remnant. The...

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Diamantes en la cola del escorpión
Miércoles, 19 Febrero, 2014 Astronomía

ESO ofrece una nueva imagen del cúmulo estelar Messier 7. En esta nueva imagen obtenida desde el Observatorio La Silla, en Chile, podemos ver el brillante cúmulo estelar Messier 7. Fácilmente localizable a ojo, cerca de la cola de la constelación de Escorpio, se trata de uno de los cúmulos...

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RXTE Reveals the Cloudy Cores of Active Galaxies
Miércoles, 19 Febrero, 2014 Astronomía

Picture a single cloud large enough to span the solar system from the sun to beyond Pluto's orbit. Now imagine many such clouds orbiting in a vast ring at the heart of a distant galaxy, occasionally dimming the X-ray light produced by the galaxy's monster black hole. Using data from NASA's Rossi X-...

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Cómo sobrevivir a una dieta inestable
Martes, 18 Febrero, 2014 Astronomía

El GTC ayuda a comprender el insólito comportamiento de algunas estrellas binarias. Hay sistemas de estrellas que se comen la una a la otra. Es decir, la masa fluye de un objeto al otro, sobreviviendo al proceso de pérdida y recuperación sucesiva de materia. Esta transferencia de masa se ve en...

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¿Dónde está Gaia?
Lunes, 17 Febrero, 2014 Astronomía

Camuflado entre un sinfín de estrellas, el diminuto punto blanco marcado en rojo en estas dos imágenes no es nada menos que el satélite Gaia de la ESA, visto desde el Telescopio VLT del Observatorio Europeo Austral en Chile.

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Mars Rover Heads Uphill After Solving 'Doughnut' Riddle
Viernes, 14 Febrero, 2014 Astronomía

Researchers have determined the now-infamous Martian rock resembling a jelly doughnut, dubbed Pinnacle Island, is a piece of a larger rock broken and moved by the wheel of NASA's Mars Exploration Rover Opportunity in early January.

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Responding to Potential Asteroid Redirect Mission Targets
Viernes, 14 Febrero, 2014 Astronomía

One year ago, on Feb. 15, 2013, the world was witness to the dangers presented by near-Earth Objects (NEOs) when a relatively small asteroid entered Earth's atmosphere, exploding over Chelyabinsk, Russia, and releasing more energy than a large atomic bomb. Tracking near-Earth asteroids has been a...

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