Table 1. Subjects and details of research for classification of articles published in JASS during the period from 1984 to 2018 [1]

Subjects		Contents
1	Space envinronment	Sun (or solar), magnetosphere, ionosphere, space-ray
2	Space exploration	Solar system (except earth and sun), lunar exploration, space survey (including asteroids and comets)
3	Space application	Space geodesy, payload, application (including microgravity and remote sensing)
4	Space technology	Satellite operation, satellites (including space shuttles and rockets)
5	Space astronomy	Observation instruments, general astronomy, historical astronomy
6	Other	Education, meteorological (or climate)

JASS, Journal of Astronomy and Space Sciences.