Lucent library of science and technology

Gale eBooks

Comets demystified, asteroids discovered -- How asteroids and comets formed -- Vital statistics of asteroids and comets -- Voyages to the comets and asteroids -- How humans will mine asteroids and comets -- When comets and asteroids strike earth

Discusses the history of comets and asteroids, how they are formed, where they are found, and what impact they made have on the future of the Earth