Assemblers of Infinity by Kevin J Anderson
Price: $4.99 USD. 112250 words.
Published by WordFire Press on November 26, 2010. .
Nebula Award Nominee. The crew of Moonbase Columbus make an amazing discovery on the far side of the Moon—a massive alien structure is erecting itself, built up atom by atom by living machines, microscopically small, intelligent, and unstoppable, consuming everything they touch. The mysterious structure begins to expand and take shape, and its creators begin to multiply.