When I began writing Final Frontier, my recent book on spaceflight past, present and future, I had a clear picture of the financial and practical realities. Manned flights (and the International Space Station, or ISS) have almost no scientific value. We should stop wasting our science budgets immediately and focus on the space science work that really does deliver -- unmanned satellites and probes. I knew exactly what I was going to say. And yet by the time I had finished the book, my opinion had reversed.
In part it was a reawakening of memories. Revisiting that wonderful time in the late '60s when, as a young person, I witnessed the most amazing thing anyone had ever seen. A human being walking on the Moon. I had been brought up on Doctor Who and Star Trek. This was the ultimate in making dreams com...
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