We may not be able to see asteroids without a telescope, but there are thousands of these space rocks circling the sun. In this fact-filled, simple text, readers learn about asteroid formation, size, shape, and orbits. They are also introduced to the methods that scientists use to track asteroids. Fast facts and a hands-on activity expand the reader's learning experience, while full-color images enrich the text with additional details and examples. The book supports the Common Core English Language Arts standards for reading informational texts, and also correlates directly with Next Generation. Provided by publisher.

What is an asteroid? -- How is an asteroid formed? -- Big, small, and in-between -- Shaping up -- A rocky doughnut -- Sharing a path -- Too close? -- Goodbye dinosaurs -- Defense! -- Activity: making craters.