The Friendly ship was at the coordinates when Casanova's fighter got there. The alien ship's A.I. supervised his approach and entry into what would be called the Hangar Bay on a human ship. Once inside and powered down, Casanova asked his alien counterpart why it wasn't possible for him, Casanova, to go back in time himself. After getting approval to reveal that information, the A.I. answered his question. "I've been authorized to explain the peculiarities of time travel to you. My masters discovered that inanimate matter can be sent back in time, but if animate matter is sent back, it is no longer living when it arrives at its temporal destination. The problem is that the living matter within each cell of the body is in some kind of motion. It's that motion that results in various molecules being manufactured and transported to where they are required. That is what biological entities refer to as life. Time travel strips away all motion above the atomic level. A biological entity that has traveled in time is in the same physical state as it would be if it was dead.
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