©2001 The Regents of the University of California

We encourage individual users, teachers, and students to make classroom-based, not-for-profit use of the materials available through the UC Berkeley Center for Science Education at Space Sciences Laboratory (CSE@SSL) and its World Wide Web site. All our materials are copyright of the University of California Regents with the exception of data and images from NASA and other sources which may be in the public domain or subject to their own copyright restrictions.

Proper Use of Materials:
You may make a hyperlink to any of our resources for use in a classroom or school-based educational setting.

You may make single copies of the available resources, or use excerpts, for classroom use or for research. Multiple copies may be made for classroom use provided that they are not distributed for profit, publication purposes, or commercial advantage, and that the copies bear a UC Regent copyright notice, i.e. Copyright 1995-2013 UC Regents. All rights reserved.

You may also incorporate our available resources into your own lessons or classroom activities provided that the adapted or new resource is for classroom, educational, not-for-profit use, and that it will not be part of a new publication, electronic or otherwise.

We hope you enjoy our resources and we welcome your feedback!

What You Can Not Do:
Except as specified above, no part of this World Wide Web site may be reproduced, transmitted, adapted, or performed in any form or by any means including electronically, without permission in writing from the Center for Science Education at Space Sciences Laboratory (CSE@SSL), University of California at Berkeley (UCB). For permission, email outreach@ssl.berkeley.edu. All text, images, and other resources in this page are Copyright © 1995-2013 The Regents of the University of California. All rights reserved.