Books published by Smithsonian Books

The captivating possibilities of extraterrestrial life on exoplanets, based on current scientific knowledge of existing worlds and forms of lifeIt is now known that we live in a galaxy with more planets than stars. The Milky Way alone encompasses 30 trillion potential home planets. Scientists Trefil and Summers bring readers on a marvelous experimental voyage through the possibilities of life--unlike anything we have experienced so far--that could exist on planets outside our own solar system.Life could be out there in many forms: on frozen worlds, living in liquid oceans beneath ice and communicating (and even battling) with bubbles; on super-dense planets, where they would have evolved body types capable of dealing with extreme gravity; on tidally locked planets with one side turned eternally toward a star; and even on "rogue worlds," which have no star at all. Yet this is no fictional flight of fancy: the authors take what we know about exoplanets and life on our own world and use that data to hypothesize about how, where, and which sorts of life might develop. Imagined Life is a must-have for anyone wanting to learn how the realities of our universe may turn out to be far stranger than fiction.

Replete with color photographs, drawings, and maps of Viking sites, artifacts, and landscapes, this book celebrates and explores the Viking saga from the combined perspectives of history, archaeology, oral tradition, literature, and natural science. The book''s contributors chart the spread of marauders and traders in Europe as well as the expansion of farmers and explorers throughout the North Atlantic and into the New World. They show that Norse contacts with Native American groups were more extensive than has previously been believed, but that the outnumbered Europeans never established more than temporary settlements in North America.