galaxies

Introduces galaxies, describing how they form and change over time, their different sizes, shapes, and distance from Earth, and the major features of the Milky Way.

Looks at what scientists have learned about black holes, focusing on the black hole known as Sagittarius A believed to exist at the center of the Milky Way, and discusses the possibility of being able to observe, and thus prove the existence of black holes with the use of technology already in development.

Photographs and simple text introduce young readers to stars and galaxies, discussing how stars are born and how they die.

Explains the laws of planetary motion and describes how scientists have found new planets outside the solar system.

An account of the efforts of astronomers to explore the outer limits of the universe and documents how objects on the edge of viewability inform the scientific community about the beginnings of time and such mysteries as the cosmic dark age and dark energy.

Takes the reader on an exploration of the universe starting with the Earth and its moon, and then the planets of the solar system, the stars, and the galaxies.

Describes the Sun and other stars in the galaxy, including their structures, energy production, physical properties, and the life cycle of a star.

Shows the many celestial wonders that can be viewed by the unaided eye, and explains, in nontechnical language, a variety of astral phenomena.

Describes the characteristics of different types of galaxies focusing on the Milky Way and its inhabitants, 100 billion stars.