This is a new book about the potential for space colonization.

Its concluding section presents a scattered but sweeping vision for our future in space, and offers more plausible ideas than can be found in whole shelves of futuristic science fiction. Want to construct a lunar base, or mine asteroids for precious resources? Are you looking for alien life in our solar system, or habitable planets around other stars? Impey covers all this and much, much more in a brilliantly brisk series of chapters intended to show how we might someday become not only an interplanetary species but also an interstellar one.

Such a leap would be far more epochal than that of the Apollo moon landings, Impey notes. If Earth were the size of a Ping-Pong ball, the marble-size moon would be only a yard away — and the nearest neighboring star system would be 30,000 miles distant. Though that distance may now seem insurmountable, Impey implores us to consider the possibility of crossing it, even if only to grasp how far we have come since our ancestors spread out of Africa, and how far we still must go in securing a legacy for our distant descendants.

Someday, the sun and Earth will perish, but humanity may have the choice to be “more than a footnote in the history of the Milky Way.” Contemplating this future “and the possibility that we might not exist at all, is as haunting as deep space,” Impey writes.

The book review makes some references to H.G. Wells’ 1902 essay series Anticipations, which I might get around to reading some day.