Böcker av Ph. D. Rebecca Woodbury

A galaxy is a huge group of stars, planets, gas, dust, comets, asteroids, and other objects in space. Our Sun and Earth are part of the Milky Way Galaxy. The Milky Way is so huge that we cannot travel outside it to see what it looks like. Studying other galaxies and how stars are arranged in the Milky Way gives astronomers an idea of what it looks like. Telescopes are instruments used to study galaxies and other objects in space. Scientists think the Milky Way Galaxy is shaped like a pinwheel with a bulge of stars in the center and arms made of stars that reach out in a spiral. The Milky Way is called a spiral galaxy, and we can see many spiral galaxies in the universe. Another type of galaxy is the elliptical galaxy that is made of tightly paced stars and has no arms. There are also irregular galaxies that can be any shape. There are trillions of beautiful galaxies in space. Pronunciation guide included. 24 pages filled with engaging, colorful illustrations. Reading Level 1-3, Interest Level 2-5, Word count 307, Lexile measure 540L.