Space/Science — HabitableZone

Space/Science » in reply to This is like neaderthal predicting 21st century and that is less than 100K years

re: This book is a thought exercize

2 astronomers (who look at anything but earth) turned their eyes to our planet (as a spaceship) and knowing there is no world so much like ours it could be inhabited, anywhere near,...wrote the book asking themselves how we could cope with our own planet in the future....It's only an exercize.

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