Posts Tagged ‘Creeps and jackasses’

Memo to my neighbors

Sunday, July 5th, 2009

At midnight, the date changes. On July 5, it is no longer appropriate to play with explosives. It’s nice that you feel like celebrating, but I really need to sleep.

Grrr

Monday, February 9th, 2009

I spent most of the weekend installing and tweaking a new theme. It looks fine in my main browser, but I just discovered that in Safari, there are suddenly ads on my site when you click on links to particular stories. Expect more changes.

Update: Fixed.

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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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