JBB’s Twitter Updates for 2010-07-22

July 22, 2010 by joe.bustillos
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The Oregon Trail: Official Movie Trailer

The more you know about the nascent computer education game the funnier this trailer is. I can't tell you how many times I watched fourth graders lose everyone in their travel party because they shot more bison than they could eat or carry (or like the guy in the trailer, they spent all of their money on bullets and no other previsions). Good times.
NASA Image of the Day
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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