In The Billion Dollar Boy, rich, spoiled, overweight 15-year-old Shelby Cheever is bored, so he convinces his mother to take him on a space cruise. Without proper preparation, and drunk besides, he accesses the node network alone to visit the Kuiper asteroid belt and finds himself hurtled 27 light years out to the Messina Dust Cloud, where he is rescued by a mining family. On the three-month journey home, Shelby must learn how to do for himself in an environment where his wealth and pampered status mean nothing. Another well-written coming-of-age adventure story in the new Jupiter series. For large sf collections. In the hard-science Tomorrow & Tomorrow, Sheffield explores changes in the solar system and the theory of a closed vs. open system wrapped around a tale of a musician’s fanatical love for his wife. Drake Merlin has his dying wife Ana and himself cryonically frozen so they can be together once a cure for her disease is found. Several times over 15 billion years he is awakened only to find no cure and, one time, he accidentally causes Ana’s death. But if the theory of a closed system is true and the universe shrinks, he and Ana can return to a point when she is alive