“Close Encounters of the Galactic Kind” explains that galaxies don’t just stay the same out there in space—they are constantly moving and changing. Sometimes they even collide or merge with another galaxy to form another, larger galaxy. The photographs in this article beautifully illustrate the different shapes that can occur when galaxies collide. An accompanying educator’s guide includes discussion questions and answers as well as definitions for key terms.
Earth and Space Science
READER MODULE
Sixth grade, Seventh grade, Eighth grade