The Multiscale Atmosphere Geospace Environment (MAGE) model helps scientists understand how energy from the Sun affects Earth’s space environment, especially during geomagnetic storms. Developed by the NASA DRIVE Science Center for Geospace Storms, MAGE connects key regions of near-Earth space—from the solar wind to Earth’s upper atmosphere—using physics-based computer simulations. MAGE is now freely available for anyone to use, along with a set of user-friendly analysis tools called Kaipy. The model can also be run through NASA’s Community Coordinated Modeling Center. We use MAGE to study recent space weather events, including the powerful May 10, 2024 storm, revealing how particles and energy move through space and interact with Earth’s atmosphere. These simulations help scientists better understand storm impacts and improve space weather forecasting. We also highlight new resources to help researchers, educators, and students explore space weather using MAGE.