Summary:
- NASA is launching two new space weather missions, the Geospace Dynamics Constellation (GDC) and the Electrojet Zeeman Imaging Explorer (EZIE), to study the Earth's upper atmosphere and its interactions with the Sun.
- The GDC mission will use a fleet of satellites to measure the dynamics of the Earth's upper atmosphere, which is important for understanding space weather and its impact on communication and navigation systems.
- The EZIE mission will use specialized instruments to measure the electrical currents in the Earth's upper atmosphere, which are driven by the Sun's activity and can affect satellites and power grids on Earth.