On the Moon’s far side, shielded from Earth’s radio cacophony, Americans are building a radio-astronomy observatory. Russians sift the dust of a lunar “sea” for helium-3 to run future fusion reactors. Commercial robots, remotely operated from Earth, roam the Moon’s near side in a hunt for mineral wealth. Why chase distant asteroids for precious metals? One-time asteroids must lie close beneath the much-bombarded lunar surface.

Then a prospecting robot encounters a desiccated, spacesuited figure. An alien figure.

Americans from the lunar observatory investigate. Near the original find, underground, they discover an alien installation. Lunar Russians, realizing that the Americans are up to something clandestine, send their own small team. Each group distrusts the other … even before the fatal “accidents” begin. By the time anyone suspects what ancient evil they have awakened, it may be too late.

For everyone on Earth, too.

No one expected the oil to last forever. How right they were. A geopolitical miscalculation tainted the world’s major oil fields with radioactivity and plunged the Middle East into chaos. Any oil that remains usable is more prized than ever. No one can build solar farms, wind farms, and electric cars quickly enough to cope. The few countries still able to export petroleum and natural gas—Russia chief among them—have a stranglehold on the world economy. Then, from the darkness of space, came Phoebe. Rather than deflect the onrushing asteroid, America coaxed it into Earth’s orbit. Solar power satellites—cheaply mass-produced in orbit with resources mined from the new moon to beam vast amounts of power to the ground—offer America its last, best hope of avoiding servitude and economic ruin. As though building miles-wide structures in space isn’t challenging enough, special interests, from technophobes to eco-extremists to radio astronomers, want to stop the project. And the remaining petro powers will do anything to protect their newfound dominance of world affairs. NASA engineer Marcus Judson is determined to make the powersat demonstration project a success. And he will—even though nothing in his job description mentions combating an international cabal or going into space to do it.