Learners will visit a sequence of stations to discover how the dark and light areas and craters we see on the Moon's face today record major events of its lifetime. While they may visit the stations in any order, the stations trace the Moon's... (View More) 4.5-billion-year history from "infancy" to the imagined future. The children tie together major events in the Moon's geologic history as a series of comic panels in their Marvel Moon comic books. At each station, the children identify the lunar features that were produced during that era on a Moon map. This activity is part of Explore! Marvel Moon, a series of activities developed specifically for use in libraries. (View Less)

Learners will investigate, compare, and describe patterns in Solar System data. They will then hypothesize about the formation of the Solar System based on data and explain how extrasolar planets can be discovered. In the first activity, the... (View More) students investigate Solar System data to find clues to how our planetary system was formed. By the end of the activity, the students come to understand that other stars form just like the Sun, and, therefore, many stars could have planets around them. The second activity examines how scientists can find these extrasolar planets. By observing the behavior of a model star-planet system, the students come to understand that it is possible to see the effect a planet has on its parent star even if the planet cannot be seen directly. By comparing the properties of our Solar System with other planetary systems, we can gain a deeper understanding of planetary systems across the Universe. Note: The MESSENGER mission to Mercury that is mentioned in this lesson ended operations April 30, 2015. For the latest information about MESSENGER and NASA's solar system missions see the links under Related & Supplemental Resources (right side of this page). (View Less)

This online activity introduces the importance of meteorites to the understanding of the origin of the Solar System. Learners will use a key to determine if samples are meteorites. Finding meteorites can be difficult because most meteorites look... (View More) like Earth rocks to the casual or untrained eye. (View Less)