This story is taken from Explorer magazine, a nonfiction reading resource for learners in second to fifth grade, published by National Geographic Society. Have your students read the story and then test their comprehension with the reading and/or content activities included in this article.

Snapshot of Space

Reinforce students' learning about new science discoveries with activities that provide engagement, exploration, explanation, elaboration, and evaluation.

asteroid
Noun

irregularly shaped planetary body, ranging from 6 meters (20 feet) to 933 kilometers (580 miles) in diameter, orbiting the sun between Mars and Jupiter.

Noun

natural satellite of a planet.

Noun

large, spherical celestial body that regularly rotates around a star.

solar system
Noun

the sun and the planets, asteroids, comets, and other bodies that orbit around it.