Washington, DC Jan. 16, 1998 – SpaceCast wishes to provide readers a clarification concerning the relationship between Ball Aerospace and

Earthwatch, Inc. Earthwatch was created in March, 1995 by the merger of the commercial remote sensing efforts of Ball Aerospace & Technologies, Inc. and Worldview Imaging Corp.

Ball, as a result, is a equity partner in Earthwatch, Inc. Additional

partners in the venture include Hitachi, Ltd., Datron Systems Inc., Nuova

Telespazio s.p.a., CTA, Inc. (now Orbital Sciences Corp.), and MacDonald,

Dettwiler, & Associates, Ltd.

Ball Aerospace is the maker only of the gimbal and payload targeting mirror

for Earlybird 1. The satellite's builder is CTA, Inc., now Orbital Sciences

Corp.of Dulles, Va. We hope that this clarification corrects any impression

about the relationship between the two firms that may have been made by any

earlier report by this news service.