This site was created for Central High School of Philadelphia Astronomy Honors class. It is used for students' projects and presentations.
News and articles
Astronomy.com
Are you curious about dark matter and dark energy in our Universe? Want to know more about it? Here is the article published in arXiv on January 21, 2009. It gives a review of the development of the concept of dark matter from the moment it was introduced until today.
Ok, dark matter. How about dark comets? And a new theory of Tunguska event? Intrigued? Read this article.
Stonehenge
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This QuickMovie is created using my pictures of Stonehenge taken in 2007