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Last updated: 13 October 2017


The American Astronomical Society (AAS) is committed to the value of privacy. As you use our websites, you may be prompted to enter information when you:

  • Create a user name and password
  • Use personalization features
  • Purchase a product or service
  • Sign up for a free product or service
  • Participate in online forums or discussions
  • Provide feedback

The data collected online from an AAS user is voluntary, although some services are only accessible by registering user details. Information collected may include your name, email address, street address, credit or debit card number or bank account number, job title, society membership, or other related demographic information. Except as described in this Privacy Policy, the AAS will endeavor to keep your information confidential. We focus on using the information as part of the AAS's service to you and its mission to advance and diffuse the knowledge of Astronomy and its application to human welfare.

Notice to EU Users: The server for is located in the United States. By entering information on this site, you are consenting to the transfer of that information to the United States. Your information will be handled in accordance with the AAS's Privacy Policy.

How Collected Information Is Used

The primary purpose of gathering information is to allow the AAS to link a name and contact information to a user ID or browsing experience. Once you have provided appropriate information, you will be enabled to use a variety of products or personalized services, and to access online help or support. The AAS has a policy to use or sell its customer lists only for the delivery of information deemed of potential relevance or interest to members of the Astronomical community.

How We Work to Keep Information Secure

The AAS and its Divisions take precautions to protect your information. All connections to our websites are encrypted by default whenever possible. You should always see a secure lock icon for webpages managed by the AAS. We strive to protect your personal information both online and offline. When a registration/order form on an AAS-associated site asks for sensitive information (such as a credit-card number), we use modern, strong encryption methods to protect it. We will only make available the minimal amount of personal information necessary to leadership, members, meeting attendees, vendors, etc.

Opt-out for European Union and Other Users

In accordance with EU and other guidelines, you may decline to provide the information requested by the AAS. Please be advised, however, that the AAS may be unable to provide certain services unless such information is provided for security and identification purposes.


A cookie is a piece of data stored on the user's hard drive that sometimes links to personally identifiable information about the user. The AAS uses session cookies with different lifetimes based on needed functionality. If you configure your browser to reject cookies, you may still use some, but not all, portions of our site. For example, accessing our online journals requires that your browser accept cookies. We recommend closing browsers and clearing cookies, caches, and browser history on publicly available machines (such as those in libraries) after use.

Disclosure of Aggregated and Other Information

We use IP addresses and other user information to analyze trends, administer the site, track users' movements, and gather broad demographic information for aggregate use. We may share aggregated (i.e., non-individual) demographic information with our partners and advertisers. We use one or more outside credit card processing companies to bill users for goods and services and we will disclose your personally identifiable information to these companies as needed to process your orders and to respond to your requests.

The AAS sites contain links to other sites, and other sites have links to the AAS. Please be aware that the AAS is not responsible for the privacy practices (or other practices, goods, services, or content) of other sites. We encourage you to be aware when you leave our site and to read the privacy statements of each website that collects personally identifiable information. This privacy statement applies solely to information collected by the AAS.

Discussion Forums

Users who participate in AAS online forums or discussions may have their messages or postings edited for size and/or content. Submissions to such forums explicitly grant such editorial rights to AAS staff who reserve the right to remove inappropriate submissions. By participating in an online forum or discussion, you consent to our use or disclosure of any content you submit.

Protection of Children's Personal Information

The AAS sites are general audience sites and do not knowingly collect any personal information from children.

Notification of Changes

If we make material changes to our privacy policy, these changes will be posted to our privacy policy page. You should review this page regularly for updates.