People of Earth, do not be afraid. We come in peace–and why not? For we are your cousins; we have been here before.

You will recognise us when we meet, a few hours from now. We are approaching the solar system almost as swiftly as this radio message. Already, your sun dominates the sky ahead of us. It is the sun our ancestors and yours shared ten million years ago. We are men, as you are; but you have forgotten your history, while we have remembered ours

We colonised Earth, in the reign of the great reptiles, who were dying when we came and whom we could not save. Your world was a tropical planet then, and we felt that it would make a fair home for our people. We were wrong. Though we were masters of space, we knew so little about climate, about evolution, about genetics…

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