Explorer 20
Scout X-4
National Aeronautics and Space Administration
Launch Status
SuccessMission
Explorer 20
Type: Earth Science
Explorer 20 (IE A, Ionospheric Explorer A, TOPSI, Top Side Explorer or S 48) was designed to measure electron distribution, ion density and temperature, and to estimate cosmic noise levels between 2 and 7 MHz.
Trajectory
The trajectory is unavailable. Check back for updates.
Location
Space Launch Complex 5
Vandenberg SFB, CA, USA
734 rockets have launched from Vandenberg SFB, CA, USA.

Agency
National Aeronautics and Space Administration – NASA
- Type: Government
- Abbreviation: NASA
- Administration: Administrator: Bill Nelson
- Founded: 1958
- Launchers: Space Shuttle | SLS
- Spacecraft: Orion
- Country: USA
The National Aeronautics and Space Administration is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research. NASA have many launch facilities but most are inactive. The most commonly used pad will be LC-39B at Kennedy Space Center in Florida.