Supporting your Society is supporting your discipline — and also empowering your Society to support you, in your research, teaching, professional activities, and career pursuits.
Join today. Be a part of this vitally important organization, founded in 1899 to promote the advancement of science, mentor the next generation, and work together as a community to our mutual benefit.
What Is the AAS?
Please see the membership classes page to find the category of membership that fits you best and the benefits specific to that category.
![]() Full Membership is open to any person deemed capable of preparing an acceptable scientific paper on some subject of astronomy or related branch of science. Supporting evidence for nomination to Full Membership should include at least one of the following: PhD in astronomy or closely related field; independent or senior authorship of acceptable, refereed, published paper(s); and/or detailed evidence of significant contribution to astronomy in forms other than research publication. Learn more.
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![]() Associate Membership is open to any person, 28 years of age or older who is no longer a student and has not obtained a PhD in astronomy or a related science. This person should be actively involved in the advancement of astronomy or a related science or able to provide evidence of contributions to science. Learn more.
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![]() Junior Membership is open to persons who are either:
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![]() International Affiliate Membership is open to astronomers or scientists in closely related fields who do not reside in the United States. Applicants require either nomination by an active Full Member of the AAS or must be members of an affiliated society that requires nomination for membership. Learn more.
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![]() Education Affiliate membership is open to persons professionally engaged in astronomy-related education and public outreach and whose principal employment is at community colleges, elementary and secondary schools, science centers, museums, planetariums, or agencies (e.g., National Park Service, Girl Scouts of America). Learn more.
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