The Universe Interactive E-book* explores how the organization of stars and galaxies comprise a universe and how research scientists use specialized instruments to collect data about stars and galaxies. This Enhanced E-book takes a closer look at our star, the Sun, and then uses this information to study the properties and characteristics of different types of stars. Following this exploration, the life cycle of stars, parallax, galaxies, and the organization of the universe are introduced.

*Interactive E-books are highly interactive, self-directed learning experiences designed to augment understanding of science content and pedagogy. These e-books include high-resolution images, animations, videos and interactive simulations.