Paperback, 455 pages

English language

Published Dec. 2, 1997 by Orbit.

ISBN:
978-1-85723-457-2
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Two and a half millennia ago, the artifact appeared in a remote corner of space, beside a trillion-year-old dying sun from a different universe. It was a perfect black-body sphere, and it did nothing. Then it disappeared.

Now it is back.

4 editions