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The American Center for Physics

• American Institute of Physics

     For the latest information on employment and enrollment trends, link directly to the AIP's Statistical Research Center page 
• The American Physical Society
• The Ohio Section of the American Physical Society
• The American Association of Physics Teachers

The National Science Teachers Association

The Ohio Academy of Science

Daily Physics & Astronomy News, graduate schools, job postings, features, reference and much more at PhysLINK.com

The American Astronomical Society

The American Association of Amateur Astronomers

The Astronomy Cafe - a fun site 

The Astronomical League - the world's largest federation of amateur astronomers 

Astronomy Magazine

The Astronomy Network of Ohio - a must-link for everyone and anyone interested in astronomy 

Brian's Space Hotlist - a good starting place with an extensive list of links; especially good if you're looking for a wide variety of topics

The International Dark Sky Association

The International Astronomical Union

• For official information about buying stars or naming stars, link to the IAU's Naming Stars section

Science at NASA - News, recent headlines, Thursday's Classroom, features, and more from the Marshall Space Flight Center 

Space.com - What CNN is for news, Space.com is for space 

The Space Telescope Science Institute - for information and images from the Hubble Space Telescope 

Spaceflightnow.com

Spacenews.com

Today at NASA - NASA's Newsroom - offical releases, updated information 

Universe Today: For space news from around the internet, updated every weekday; includes an extensive page of links to astronomy/space interests that's a great research launchpad for educators and students. Go directly to the link page at http://www.universetoday.com/html/directory/