Marrow (novel)Marrow is a science fiction novel by American writer Robert Reed published in 2000.
After thousands of years, with over 200 billion creatures living in its upper levels, a group of explorers discover a planet hidden in the core of the Great Ship. As they explore it, however, an ionic blast cuts them off from the rest of the ship and destroys much of their technology. Because this planet, Marrow, is slowly expanding, the explorers reason that a new bridge can be built in another 5,000 years. They thus begin a civilization on the surface of Marrow.
The descendants of these original explorers come to believe that the large superstructure has been built to contain the Bleak, a race of nearly unstoppable insect-like creatures. Calling themselves the Wayward, they take over the ship when the bridge is completed and attempt to steer it towards a black hole to destroy the Bleak.
One of the original explorers sees a vision of the Builders of the ship fighting the Bleak, containing them within the heart of Marrow and constructing the ship around it as a prison. The Bleak, it is concluded, have twisted the Wayward into destroying the ship so that they may escape. They stop the Wayward's plan by undermining the ship's control and command systems to divert the engines' thrust just enough to skim past the black hole .
The book ends with the suggestion that, with Marrow being a prison for the Bleak and the Great Ship an extension of that prison, the universe itself could be a further layer constructed by the Builders.
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