The Defense Advanced Research Projects Agency (DARPA) is initiating a Request for Information (RFI) for the Ouija Satellite Guest Investigator Data Challenge, aimed at leveraging data from the upcoming Ouija satellite, scheduled for launch in June 2025. This satellite will operate in Very Low Earth Orbit (VLEO) and is equipped with scientific instruments designed to analyze the high-frequency noise environment in space, enhance the characterization of the ionosphere, and validate HF propagation predictions. The initiative seeks to engage Guest Investigators (GIs) who can propose innovative research projects that utilize the unique datasets generated by the Ouija mission, potentially addressing significant scientific challenges related to ionospheric dynamics and global phenomena. Interested parties are encouraged to submit their qualifications and research proposals to DARPA at DARPA-SN-25-15@darpa.mil, as this RFI may lead to future funding opportunities for selected GIs.