Transit of Venus, Sun-Earth Day 2012

National Aeronautics and Space Administration

Goddard Space Flight Center

Transit of Venus, Sun-Earth Day 2012

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Astronomical Leagues Near You

The Astronomical League is composed of over two hundred and forty local amateur astronomical societies from all across the United States. There basic goal is to encourage an interest in astronomy (and especially amateur astronomy) throughout America whether it is through their local astronomical society, school, or their own instruments, and use them to view the beauty in the heavens. Use this site to contact nearby astronomical societies that are members of the Astronomical League!

Association of Science and Technology Centers

Links to members.

International Planetarium Society

Worldwide Listing of Planetaria.

National Science Teachers Association

Local Chapters and Associated Groups

National Association of Geoscience Teachers

Regional Sections

NASA Fact

The strongest magnetic field in nature is from the magnetar star SGR 1806-20, which has been estimated as 800 trillion Gauss.