Carl Sagan, Cornell University astronomer, at the UC Santa Cruz Spring Convocation: Chancellor Robert Sinsheimer at the podium, with Sagan, Frank Drake (seated left of podium), Michael Cowan (seated right) and unidentified others on the stage

Select what you would like to download. If choosing to download a file, please select the file format you wish to download. Please note full item download may take several minutes (PDF only).

Certain download types may have been restricted by the site administrator.

Select the item elements you would like to include in the embed code.