Caravana de BMW Córdoba
El pasado domingo 11 de abril se realizó una caravana de autos BMW hacia Traslasierras desde Córdoba Capital, más info en www.bmwcordoba.com.ar
Javier Sinde Blog
Diario de un Geek
Archive for abril, 2010
BMW Córdoba. Willkommen!
NASA foto del día
A Chameleon Sky
The sands of time are running out for the central star of this the Hourglass Nebula. With its nuclear fuel exhausted, this brief, spectacular, closing phase of a sun-like star's life occurs as its outer layers are ejected and its core becomes a cooling, fading white dwarf. In 1995, astronomers used the Hubble Space Telescope to make a series of images of planetary nebulae, including the one above. Here, delicate rings of colorful glowing gas (nitrogen-red, hydrogen-green, and oxygen-blue) outline the tenuous walls of the 'hourglass.' The unprecedented sharpness of Hubble's images revealed surprising details of the nebula ejection process and may resolve the outstanding mystery of the variety of complex shapes and symmetries of planetary nebulae. Image Credit: NASA, WFPC2, HST, R. Sahai and J. Trauger (JPL)
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