Resources for Learning is made possible by a generous grant from The Louis Calder Foundation.

This material is based upon work supported by the National Aeronautics and Space Administration under Grant No. NAG5-12855 issued through the Office of Space Science.

This guide was developed by the Education Department and the National Center for Science Literacy, Education, and Technology.

The restoration of the Arthur Ross Hall of Meteorites is made possible through the generosity of the Arthur Ross Foundation.

Written and produced by: Christine Economos

Content research: Armistead Booker, Rachel Berger Connolly, Dana Leibowitz, Minna Palaquibay, Zohar Ris

Review: Denton Ebel, Robert A. Fogel, Myles Gordon, Rosamond Kinzler

Designed by: John Snavely

Copyedited by: Michele Albright

Thanks to: Craig Chesek, Jane Murray, Sarah Wilson

Illustrations: Map: Kascha Semon, Student Resource Pages: Kascha Semon, Eric Hamilton