This policy establishes how NASA will use information gathered about our website visitors. The privacy of our customers is of utmost importance.

NASA Copyright and Privacy Notice
Copyright Status: Most information at this site is in the public domain. Unless otherwise stated, these documents may be freely distributed and used for non-commercial, scientific, educational or personal purposes. However, you may encounter documents or portions of documents contributed by private companies or organizations. Other parties may retain all rights to publish or reproduce these documents. Commercial use of the documents on this site may be protected under U.S. and foreign copyright laws.

Disclaimer of Liability: For documents available from this server, the U.S. Government does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed.

Disclaimer of Endorsement

-- General --
NASA does not endorse or recommend any commercial products, processes, or services. The views and opinions of authors expressed on NASA Websites do not necessarily state or reflect those of the U.S. Government, and they may not be used for advertising or product endorsement purposes.

-- External Links --
Some NASA sites may provide links to other Internet sites only for the convenience of World Wide Web users. NASA is not responsible for the availability or content of these external sites, nor does NASA endorse, warrant or guarantee the products, services or information described or offered at these other Internet sites.

Privacy Notice: This Web site is provided as a public service by NASA.

If you visit a NASA site...

To read or download information:
We may collect and store information for statistical purposes. For example, we may count the number of visitors to the different sections of our site to help us make them more useful to visitors. Similar information is gathered for anonymous ftp, remote account login, or for other comparable types of connections.

To send us an e-mail:
By sending us an electronic mail message, you may be sending personal information (e.g., name, address, e-mail address), as in an official Freedom of Information Act request. We may store the name and address of the requester in order to respond to the request or to otherwise resolve the subject matter of the message.

To register:
Some of our sites ask visitors who request specific information to fill out a registration form. For example, vendors looking for marketing opportunities by visiting our Electronic Grants or NASA Acquisition Internet Service sites may be asked to "register" to obtain copies of Requests for Proposals or other NASA opportunities. Other information which may be collected at these sites through questionnaires, feedback forms, or other means, enables us to determine a visitor's interests, with the goal of providing better service to our customers.

NASA Website Disclaimer Statement
Thank you for visiting this NASA website. NASA may provide links to web pages that are not part of the NASA web family, or nasa.gov domain. These sites are managed by organizations, companies, or individuals not under NASA control, and NASA is not responsible for the information or links you may find there. NASA provides these links merely as a convenience and the presence of these links is not NASA endorsement of the site.

We want to be very clear: regardless of the information being transmitted to NASA, we will protect all such information consistent with applicable law.

The majority of pages on this website are accessible to individuals with disabilities in accordance with Section 508 of the Rehabilitation Act. If you have accessibility problems, please let us know.

Information for Users with Visual Disabilities

Images on our website are accompanied by alternative text describing graphics if your browser supports the alt-text function. Documents on our website are presented in many formats. These formats are generally accessible to users using screen reading software. Some files are posted as Adobe Acrobat PDF (Portable Document Format) files. Users with visual disabilities click here for free access to software from Adobe which will make reading PDF files easier Adobe Acrobat Accessibility Link.

If you have any difficulty viewing any page with adaptive technology, click here to let us know.