| A Chameleon Sky | ||
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| 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)... | ||
| 03 Sep 2010 | ||
| 800x600 | 1024x768 | Large |
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Example Pages
Example Pages and Menu Links
Tuesday, 12 August 2008 09:26 | Written by kaka suminta | 
This page is an example of content that is Uncategorized; that is, it does not belong to any Section or Category. You will see there is a new Menu in the left column. It shows links to the same content presented in 4 different page layouts.
- Section Blog
- Section Table
- Blog Category
- Category Table
Follow the links in the Example Pages Menu to see some of the options available to you to present all the different types of content included within the default installation of Joomla!.
This includes Components and individual Articles. These links or Menu Item Types (to give them their proper name) are all controlled from within the Menu Manager->[menuname]->Menu Items Manager.
Last Updated (Tuesday, 12 August 2008 09:26)
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