Stephen Baxter Resplendent

8,000 years ago Europe was a very different place. England was linked to Holland by a massive swathe of land. Where the North Sea is now lay the landmass of Northland. And then came a period of global warming, a shifting of continents and, over a few short years, the sea rushed in and our history was set. But what if the sea had been kept at bay? Brythony is a young girl who lives in Northland. Like all her people she is a hunter gatherer, her simple tools fashioned from flint cutting edges lodged in wood and animal bone.

Baxter is well known for both realistic near-future, alternate-history novels (Voyage) and the wildest sort of hard-science speculation (Flux; Timelike Infinity). In this first volume in his Manifold trilogy, he combines both types of story, beginning with what appears to be the straightforward tale of Reid Malenfant, a millionaire industrialist who tries to circumvent a near-moribund NASA and start his own on-the-cheap space program.

The year is 2020 and the Japanese have colonized the moon. The 60-year-old Malenfant is called there by a young scientist named Nemoto who has discovered something in the asteroid belt that can only mean humans are not alone in the universe. The aliens seem robotic in nature and appear to be building something in Earth's backyard. The Gaijin, as they are called by humans, don't respond to communication efforts so an unmanned ship is launched to investigate.