Since the time of Newton the basic structure of the solar system and the laws
that govern the motions of the bodies within it have been well understood. One
central body, the Sun, containing most of the mass of the system has a family of
attendant planets in more-or-less circular orbits about it. In their turn some of
the planets have accompanying satellites, including the Earth with its single satellite,
the Moon. With improvements in telescope technology, and more recently
through space research, knowledge of the solar system has grown apace.
(BQ) Ebook Earth Evolution of a habitable world is described in the context of what we know about other planets and the cosmos at large, from the origin of the cosmos to the processes that shape planetary environments and from the origins of life to the inner workings of cells. Astronomy, earth science, planetary science and astrobiology are integrated to give students the whole picture of how the Earth has come to its present state and an understanding of the relationship between key ideas in different fields.
From the early explorers onwards, visitors to the
Arctic and to Antarctica have commented with
great interest on the presence of lakes, wetlands, and
fl owing waters. These environments encompass a
spectacular range of conditions for aquatic life, from
dilute surface melt ponds, to deep, highly stratifi ed,