The tiny specks of light we see in the sky at night, called stars, are actually enormous objects made of gas. A very large system of stars is a galaxy. Readers will catch a glimpse of the many stars and galaxies that make up the universe.

What's out there? -- What is a star? -- How stars form -- Types of stars -- Supernova! -- Pulsars -- Constellations -- Galaxies -- Galaxy shapes -- The Milky Way -- Black holes -- Galactic neighbors -- Quiz.