The Giants Novels (Inherit the Stars, The Gentle Giants of Ganymede

Discover the first three books in the ground-breaking 21st century hard-science fiction saga by James P. Hogan:
INHERIT THE STARS
The skeletal remains of a human body are found on the moon. His corpse is 50,000 years old, and nobody knows who he was, how he got there, or what killed him.
THE GENTLE GIANTS OF GANYMEDE
A long-ago wrecked ship of alien giants is discovered by Earth’s scientists on a frozen satellite of Jupiter. Then, spinning out of the vastness of space, a ship of the same strange, humanoid giants has..