So the ship did what its Heechee designers had programmed it to do in such an event. It simply returned to the place it had come from when its Heechee pilot had left it, half a million years ago.
As it happened, that place was an asteroid.
It was an odd asteroid in several respects. Astronomically it was odd, because its orbit was at right angles to the ecliptic. For that reason, although it was a fair-sized chunk of rock and not far from Earth's own orbit at times, it had never been discovered by human astronomers.
The other odd thing about it was that it had been converted into a sort of parking garage for Heechee spacecraft. In total, there were nearly a thousand of the ships there.
What there was not any of anywhere on the asteroid was anything to eat or drink. So Sylvester Mackim, who could have been
the richest man in history, wound up as just one more starved-to-death corpse.
But before he died Macklin managed to get off a signal to Earth. It wasn't a call for help. No one could reach him in time to save his life. Mackim knew that. He accepted the fact that he would die; he just wanted people to know in what an unsuspected marvel of a place he was dying. And after a while other astronauts, flying the clumsy human rockets of the time, came to investigate.
What they found was the gateway to the universe.
Within the next decade the Gateway asteroid had become the center of mankind's most profitable industry, the exploration of the galaxy.
Macklin didn't own the Gateway asteroid, of course, in spite of the fact that he had discovered it. His luck wasn't that good. He didn't own anything, being dead.