moons
![Photo of the various materials used in Objects in Motion](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/11_objects_in_motion.jpg?h=deaec4b9&itok=hvuQ1cLA)
Exploring the Universe: Objects in Motion
In this activity, learners use "orbiting" clay balls to make simple, functioning models of interacting objects in space.
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![Learner investigates the crater made in the sand after dropping a weight into the sand box](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/exsci_space_craters_activity.png?h=9e6c9da4&itok=RpZIqLlV)
Exploring the Solar System: Craters
In this activity, learners drop objects of various sizes and shapes into a tub full of sand and other materials, to simulate the formation of a meteorite crater.
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