“An Icy Traveler Sweeps Past Mars” introduces Comet Sliding Spring, which passed near Mars on October 19, 2014. The article then goes on to discuss collisions between comets and planets as well as the difference between long-period and short-period comets. Accompanying photos and diagrams are excellent, and 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