by Robert A. Heinlein and Spider Robinson
Review by Ernest Lilley
Tor Books Hardcover ISBN/ITEM#: 076531312x
Date: 19 September, 2006 List Price $24.95 Amazon US / Amazon UK / Show Article /
From official release/information:
Spider Robinson is often blurbed as the next Robert Heinlein, but I've never quite been able to buy into it. Not until Variable Star. For bringing this posthumous collaboration back to Earth safe and sound I'd be more than happy to pin the medal on him myself.
(Source: Tor Books)