Ok, I really need to catch up here. The problem is the lack of consistent internet in the Grenadines. Bequia is one of our favorite islands. The islanders are very friendly,we weren’t bothered by boat boys, the island has great beaches and cheap rotis. We spent about a week there, mostly kept in by [...]
Read More...Top
-
-
Cloud
4 corners ABCs Amitabha Stupa Amtrak Arizona Balcony House boatyard Boulder Bookstore California Condors California Zephyr Cliff Palace Cold Colorado Colorado Wolf and Wildlife Center curacao curacao marine Elk elk mating season Four Corners Grand Canyon Junior ranger Makai Mesa Verde Monument Valley Utah on the hard Pikes Peak quotes Rancho Sedona RV Park red rocks Rocky Mountain National Park Royal Gorge Colorado San Francisco Sedona Sedona Campgrounds Snow Tara Stupa Time Money Trail Ridge Road we're back wolves Yosemite national Park
WP Cumulus Flash tag cloud by Roy Tanck and Luke Morton requires Flash Player 9 or better.
NASA
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)
Read MorePages
Meta
Blogroll
Friends