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STS 128 Pad 39A
Projected Launch 0 days.NASA Images
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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Born on this day
September 05
Johann Christian Bach 1735
Jesse James 1847
Ferdinand Porsche 1875
Freddie Mercury 1946
Johnny Briggs 1935
Dick Clement 1937
Al Stewart 1945
Loudon Wainwright III 1946
Tracy Edwards 1962
Johann Christian Bach 1735
Jesse James 1847
Ferdinand Porsche 1875
Freddie Mercury 1946
Johnny Briggs 1935
Dick Clement 1937
Al Stewart 1945
Loudon Wainwright III 1946
Tracy Edwards 1962
Google News
U.S. : All
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- Obama to seek extension of R&D tax credits - Los Angeles Times
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