Psyche is a NASA interplanetary mission to visit the main belt asteroid of the same name, 16 Psyche. Spacecraft will take 4 years and one Mars flyby to reach the asteroid, which is of particular interest due to being comprised mostly of iron and nickel. Psyche is theorized to be a remnant of an early planet's core, and may offer insights into how solar system formed and evolved. The mission is led by Arizona State University, with NASA JPL being responsible for mission management and operations. This launch also includes two secondary payloads: Escape and Plasma Acceleration and Dynamics Explorers (EscaPADE), which will study the Martian atmosphere, and Janus, which will study binary asteroids.
PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) is a NASA Earth observation satellite mission. It will make global ocean color measurements to provide extended data records on ocean ecology and global biogeochemistry (e.g., carbon cycle) along with polarimetry measurements to provide extended data records on clouds and aerosols.