This website is provided as a service to you. The conditions for use are listed below. Also, this NASA webpage contains links to non NASA websites which may be useful to you. However, since these websites do not belong to and are not controlled by NASA-- there are a number of disclaimers and notices that you should be aware of-- if you choose to access these links through this NASA webpage. Search this page for information on disclaimers and notices about the use of this webpage.

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Disclaimer of Endorsement:
Reference herein to any specific commercial products, processes, or services by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or the NASA, or any of its employees or contractors. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government nor NASA, and shall not be used for advertising or product endorsement purposes. The United States Government does not endorse any commercial product, process, or activity identified by this web site nor through its agreements with non-government entities.

Disclaimer of Liability:
With respect to information available from this web page, neither the United States Government nor any of its employees, makes any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of information, apparatus, product, or process disclosed, nor represents that its use would not infringe privately owned rights.

Links To Non-NASA (Third Party) Web Pages/Sites
The links in this area may let you leave the NASA web pages. Linked web page(s) not in the "nasa.gov domain" are not under the control of NASA. NASA is not responsible for the contents of non-NASA web pages or any link(s) contained on those pages, or any changes or updates to those web pages. NASA provides such links solely as a convenience, and the inclusion of any link does not imply endorsement by NASA.

Notice of Monitored Use
Information from this web page resides on a computer system funded by a U.S. Government agency. The use of this computer system may be monitored for computer security purposes. Any unauthorized access to this system is prohibited and is subject to criminal and civil penalties under Federal Laws including but not limited to Public Laws 83-703 and 99-474.

NASA Website Privacy Statement
This policy establishes how NASA will use information we gather about you from your visit to our website. The privacy of our customers is of utmost importance to NASA.

If you visit a NASA site . . .

1. 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.
2. To send us an E-mail:
   By sending us an electronic mail message, you may be sending us 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 your E-mail.
3. 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, enable us to determine a visitor's interests, with the goal of providing better service to our customers.

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

Guidelines Regarding the Use or Reproduction of NASA Material Obtained From a NASA Web Page
NASA generally has no objection to the reproduction and use of NASA material (e.g., audio transmissions and recordings; or World Wide Web pages), subject to the following conditions:

1. You may use NASA imagery, video and audio material if it is for educational or informational purposes, including photo collections, textbooks, public exhibits and Internet Web pages.
2. This general permission does not include the NASA insignia logo (the blue "meatball" insignia), the NASA logotype (the red "worm" logo), and the NASA seal.
3. These images may not be used by persons who are not NASA employees or on products (including web pages) that are not NASA sponsored.
4. NASA material may not be used to state or imply the endorsement by NASA or by any NASA employee of a commercial product, service, or activity, or used in any manner that might mislead.
5. If the NASA material is to be used for commercial purposes, especially including advertisements, it must not explicitly or implicitly convey NASA's endorsement of commercial goods or services.
6. If a NASA image includes an identifiable person, using the image for commercial purposes may infringe that person's right of privacy or publicity, and permission should be obtained from the person.
7. NASA should be acknowledged as the source of the material.
8. It is unlawful to falsely claim copyright or other rights in NASA material.
9. NASA shall in no way be liable for any costs, expenses, claims, or demands arising out of the use of NASA material by a recipient or a recipient's distributees.
10. NASA does not indemnify nor hold harmless users of NASA material nor release such users from copyright infringement, nor grant exclusive use rights with respect to NASA material.
11. NASA material is not protected by copyright unless noted. If copyrighted, permission should be obtained from the copyright owner prior to use. If not copyrighted, NASA material may be reproduced and distributed without further permission from NASA.
12. Some NASA material may incorporate music or footage that copyrighted and licensed for the particular NASA work. Any editing or otherwise altering of the work may not be covered under the original license, and therefore would require permission of the copyright owner.
    NASA does to endorse or sponsor any commercial product, service, or activity.
13. Use of the NASA name or initials as an identifying symbol by organizations other than NASA (such as on foods, packaging, containers, signs, or any promotional material) is prohibited. The only exceptions are noted immediately below.
• NASA does permit the use of the NASA Logo and Insignia on novelty and souvenir-type items.
  However, such items may be sold and manufactured only after a proposal has been submitted to and approved by a
  representative from the Public Services Division (202/358-1750) in accordance with 14 CFR (Code of Federal
  Regulations) Part 1221. NASA does not grant anyone exclusive rights to use any of the Agency identities.
  NASA emblems should be reproduced only from original reproduction proofs, transparencies, or computer files available from NASA Headquarters. Please be advised that approval must be granted by the Public Services Division (see above) before any reproduction materials can be obtained.
• NASA personnel are not authorized to sign indemnity or hold harmless statements, releases from copyright infringement, or documents granting exclusive use rights.
• Photographs are not protected by copyright unless noted. If copyrighted, permission should be obtained from the copyright owner prior to use. If not copyrighted, photographs may be reproduced and distributed without further permission from NASA. If a recognizable person appears in the photograph, use for commercial purposes may infringe a right of privacy or publicity and permission should be obtained from the recognizable person.
• Audio recordings are not protected by copyright unless noted. A cassette may be excerpted or reproduced and distributed, without further permission from NASA. However, use of a portion or segment of an audiotape, such as talent, narration or music, may infringe a right of publicity or copyright and permission should be obtained from the source.
• Videotape and Motion Picture recordings are not protected by copyright unless noted. A recording may be reproduced and distributed, without further permission from NASA. Copyrighted music or footage, which is incorporated in a production, may not be used unless permission is obtained from the copyright owner. While in most instances using non-copyrighted segments is permitted, use for a commercial purpose of a portion or segment containing talent or a recognizable person may infringe a right of publicity and permission should be obtained from the talent or recognizable person. These guidelines also apply to NASA's "live television" satellite broadcasts.

Copyright Notes
Every attempt has been made to use graphics that are free use or public domain. If you notice copyright violations on this web site, please contact the Curator, and any questionable graphic shall be removed. Of course, it is not our intention to do so. Many graphics are collected from the Internet, where copyright information often is not available.