Heaven's Shadow

Three years ago, an object 100 miles across was spotted on a trajectory for Earth's sun. Now, its journey is almost over. As it approaches, two competing manned vehicles race through almost half a million kilometers of space to reach it first. But when they both arrive on the entity, they learn that it has been sent toward Earth for a reason. An intelligent race is desperately attempting to communicate with our primitive species. And the message is: Help us.

When it first appeared, the astronomers named the asteroid Keanu. A Near Earth Object, from a distant constellation, it was headed directly toward our sun. But when we went to meet it, it turned out to be far more than a huge rock hurtling through space...

Twenty years have passed since the mysterious Near-Earth Object nicknamed Keanu appeared in the night sky and transported an assortment of humans from all over Earth into its interior. There they discovered that Keanu was an immense long-range spaceship - and they were not its only inhabitants. They joined forces with the aliens called the Architects, who had come from a distant galaxy to seek help in fighting the vicious Reivers. And they defeated them - or so they thought.