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Astronomical Observations
Presents an overview of the history of astronomy, discusses the tools and technology associated with it, profiles noted astronomers, and explores the effect of expanding astronomical knowledge on modern society.
Unmanned Space Missions
Presents an historical survey of unmanned space travel, examines its scientific and practical applications, profiles notable missions, and speculates about the future of unmanned space missions.
The Universe
Outlines the history of astronomy, from the earliest conceptions of the universe to the Copernican revolution, profiles famous astronomers, and discusses recent contributions to the field.
The Milky Way and Beyond
Provides information on the properties and behavior of the spiral galaxy known as the Milky Way; discusses the origin and evolution of stars, nebulae, and other galaxies; and offers an historical survey of the study of galaxies.
The Britannica Guide to Heat, Force, and Motion
Many of the worlds most common processes and interactions are governed by the laws of thermodynamics and mechanics. While the transfer, release, or absorption of heat often accompany chemical reactions or seem inherent to mechanical systems, they are also familiar to anyone who has ever spent time outdoors on a warm day or touched a hot plate. Likewise, any physical bodylarge or small, solid or fluidis subject to a wide range of forces that trigger motion. This detailed compendium explores the foundations and laws of both thermodynamics and mechanics as well as the lives of those individuals who helped advance these fundamental areas of physics.
The Britannica Guide to Sound and Light
Discusses sound and light, including how the waves travel through different forms of matter, how human senses detect and analyze them, and describes electromagnetic radiation, echolocation, and optics.
The Outer Solar System
Presents an introduction to the solar system, focusing on the Sun and the four planets furthest from it, along with information about Pluto, the Kuiper Belt, asteroids, meteors, and comets.
The Inner Solar System
Presents an introduction to the solar system, focusing on the Sun and the four planets closest to it, along with information about the Earth's Moon and lunar and solar eclipses.
The Britannica Guide to The Atom
Discusses the structure of the atom and reveals the ways the parts facilitate both radioactivity and nuclear reactions.
The Britannica Guide to Relativity and Quantum Mechanics
Explores relativity and quantum mechanics as well as the lives of those individuals who helped advance these fundamental areas of physics.
