The United Launch Alliance Delta 2 rocket was successfully launched by NASA on 17 February 2007. The rocket hauled "five THEMIS probes into orbit.""Built by UC Berkeley and Swales Aerospace, the five THEMIS probes are designed to take up stations in ever-higher orbits ranging between one-sixth and half the distance between the Earth and Moon. Every four days, the probes are expected to align with one another and ground stations on Earth to provide a curtain of sensors to scan for substorm activity for at least two years."
THEMIS is "Time History of Events and Macroscale Interactions during Substorms." It was the "most spacecraft ever launched at one time for NASA." The system will be used to monitor and predict space weather: "Really it's an analogous system to what meteorologists use on the ground."
Creator: Gerald D. Thurman
Created: 19 February 2007