Synopsis

They soar through the heavens, fly across the oceans, and glide along the land. Yet these are not creatures encountered on a wildlife safari. These are life forms from beyond Earth. Drawing on scientific fact and a touch of imagination, experts collaborate to guide you on an unprecedented exploration of the boundaries of possibility. Scientists, astrobiologists, and astronomers construct five possible pathways of extraterrestrial evolution, revealing how life on our own planet can illuminate the