In Earth Impact!, students learn about gravitational force while they work to keep an asteroid from striking the Earth. This port of the Earth Impact! activity brings the excitement and education of TI's STEM Behind Hollywood program to the TI-84 Plus C Silver Edition. Made for Doors CSE 8.1 or higher, it provides the same engrossing lessons about Newton's law of universal gravitation, density, force, and other STEM topic that the TI-Nspire activity provides. Besides the on-calculator activity itself, it includes thorough teacher notes and a student handout, both heavily adapted from TI's original material. We would love to hear your feedback in the attached topic if you use this activity in your own classroom, and we plan to soon port Zombie Apocalypse, Body of Evidence, and Science Friction! to the TI-84 Plus C Silver Edition. We tip our hats deeply to Texas Instruments and their hard work in creating the original material for this activity.