Astronomy
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Shows the hours of daylight received during the year for an observer at a given latitude. This is an important factor contributing to the seasons. Running this animation on your computer... right-click to download daylighthoursexplorer.swf and daylighthoursexplorer.html to the same directory open the html file in a browser to run the animation Linking to this animation... copy and paste the code below into your webpage or blog:
Daylight Hrs Explorer
Cosmology
Description Overview of modern scientific cosmology, including discussion of stars, the Milky Way galaxy, black holes, dark matter, the big bang, and evidence for our current understanding of the universe. Customer Reviews Great content, but audio is seriously lacking
Last modified September 2008 by rwo Text copyright © 1998-2008 Robert W. O'Connell. All rights reserved.
Night Sky - Constellations
Click To Enlarge The current cosmological consensus is that the universe began 13.7 billion years ago with the Big Bang. But a legendary physicist says he's found the first evidence of an eternal, cyclic cosmos. The Big Bang model holds that everything that now comprises the universe was once concentrated in a single point of near-infinite density.
A Universe b4 the Big Bang?