Climb Aboard! Explore the difference between meteor, meteorite, and meteoroid! Investigate comet composition and development and their observation through history! Learn about asteroids! Learn about key astronomers tools such as telescopes and the Deep Impact spacecraft! See an infographic showing a comet’s orbit! Did You Know? facts and a Guidebook of Near Earth Objects complete your journey. Aligned to Common Core standards and correlated to state standards. Checkerboard Library is an imprint of Abdo Publishing, a division of ABDO.