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Astrofísica y Física: Diablos de polvo en Marte

Astrofísica y Física: Diablos de polvo en Marte | Ciencia-Física | Scoop.it
Los diablos de polvo son torbellinos de arena bien formados y de relativamente larga duración, que se forman cuando el aire caliente situado cerca de la superficie del suelo asciende rápidamente a través de un pequeño bolsillo de aire más frío y de baja presión situado justo por encima.

Este fenómeno muy conocido en la Tierra fue observado en Marte por primera vez en la década de los 70 gracias a las Viking. En 1997, la sonda Mars Pathfinder volvió a observarlos, y en la actualidad son varias las misiones que han aportado datos del fenómeno.

A diferencia de los diablos terrestres, estas formaciones pueden ser hasta cincuenta veces más anchas y diez veces más altas en Marte, por lo que realmente representan una amenaza para el instrumental científico situado sobre el planeta. Aún así, el 12 de marzo de 2005, un afortunado encuentro con uno de estos diablos de polvo limpió los paneles solares de Spirit incrementando drásticamente los niveles de energía del rover.
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Microscopic Particles from an Ancient Supernova Captured by NASA's Stardust Mission

Microscopic Particles from an Ancient Supernova Captured by NASA's Stardust Mission | Ciencia-Física | Scoop.it
 
NASA's Stardust Mission team reports that they have found seven dust motes that probably came from outside our solar system, perhaps created in a supernova explosion millions of years ago and altered by eons of exposure to the extremes of space.
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Image of the Day: New Supernova Explosion --Origin of Stardust in the Universe?

Image of the Day: New Supernova Explosion --Origin of Stardust in the Universe? | Ciencia-Física | Scoop.it
 
 
A group of astronomers has been able to follow stardust being made in real time — during the aftermath of a supernova explosion.
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Puzzle of Stellar Evolution --"The Interaction of Comsic Clouds of Dust & Hydrogen"

Puzzle of Stellar Evolution --"The Interaction of Comsic Clouds of Dust & Hydrogen" | Ciencia-Física | Scoop.it
 
For astrophysicists, the interplay of hydrogen — the most common molecule in the universe — and the vast clouds of dust that fill the voids of interstellar space has been an intractable puzzle of stellar evolution.
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Stardust Mission Captures Origins of Our Solar System --"Clues to the Origin of Life Itself"

Stardust Mission Captures Origins of Our Solar System --"Clues to the Origin of Life Itself" | Ciencia-Física | Scoop.it
      "Fundamentally, the solar system and everything in it was ultimately derived from a cloud of interstellar gas and dust," says Andrew Westphal, physicist at the University of California, Berkeley's Space Sciences Laboratory and lead author...
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Organic Dust of Comets --"It May Have Fueled the Emergence of Life"

Organic Dust of Comets --"It  May Have Fueled the Emergence of Life" | Ciencia-Física | Scoop.it
      "Understanding organic dust is important, because such materials are more resistant to destruction during atmospheric entry, and some could have been delivered intact to the early Earth, thereby fueling the emergence of life,” said...
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Enduring Mystery of Moon's Toxic Dust Solved from Apollo Findings

Enduring Mystery of Moon's Toxic Dust Solved from Apollo Findings | Ciencia-Física | Scoop.it
    As NASA's new lunar orbiter, LADEE, prepares to scour the Moon's atmosphere and China readies its Chang'e rover to land on the Moon by the end of the year, a physicist from The University of Western Australia has made new discoveries about...
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