Kyokko
Kyokko (EXOS-A)
Mission Descriptions
The Aurora Observation Satellite "Kyokko" was launched on February 4, 1978 to observe the density, temperature, and composition of space plasma, to study the energy and spectrum of auroral electrons, and to perform ultraviolet imaging of the aurora, and to participate in the International Magnetospheric Sounding (IMS) program. The UV Auroral TeleVision camera (ATV) was able to acquire auroral image data in the ultraviolet region (130 nm). This is the world's first auroral imaging in the ultraviolet region. Through this observation, it was discovered that there is a disturbance of plasma in the sky when the aurora appears, and that strong electromagnetic waves are emitted from it.