More by James P. Hogan
A PROBLEM IN RELATIVITY
ONE:
Eons ago, a gentle race of giant aliens fled the planet Minerva, leaving the ancestors of Man to fend for themselves.
TWO:
50 thousand years ago, Minerva exploded, hurling its moon into an orbit about the Earth.
THREE:
In the 21st century, scientists Victor Hunt and Chris Danchekker, doing research on Ganymede, attract a small band of friendly aliens lost in time, who begin to reveal something of the origin of Mankind.
Finally, Man thought he comprehended his place in the Universe...until he learned of the Watchers in the stars!
SOS FROM A FUTURE THAT WILL NEVER BE
It's amazing enough when Murdoch Ross's brilliant grandfather invents a machine that can send messages to itself in the past or the future. But when signals begin to arrive without being sent, Murdoch realizes that every action he takes changes the future that would have been...and that the world he lives in has already been altered! Then a new message arrives from the future: The world is doomed!
THE END OF EXILE
Long before the world of the Ganymeans blew apart, millennia ago, the strange race of giants had vanished. No one could discover their fate, nor where they had gone, nor why. There was only a wrecked ship abandoned on a frozen satellite of Jupiter. And now Earth's code and scientists were there, determined to ferret out the secret of the lost race.
And suddenly, spinning out of the vastness of space and immensity of time, the ship of the strange, humanoid giants returned. They brought with them answers that would alter all Mankind's knowledge of human origins in startling revelations from the past that would have biologic reverberations to be at this time. . .
THE MAN ON THE MOON WAS DEAD.
They called him Charlie. He had big eyes, abundant body hair and fairly long nostrils.
His skeletal body was found clad in a bright red spacesuit, hidden in a rocky grave.
They didn't know who he was, how he got there, or what had killed him.
All they knew was that his corpse was 50,000 years old; and that meant that this man had somehow lived long before he ever could have existed!