Subject
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- binaries1
- binary Xi Cygni1
- binary components1
- brightness outbursts1
- celestial cartography1
- celestial mechanics1
- chemical and morphological evolution1
- comets1
- contests1
- cosmic phenomena1
- cosmological constant1
- data processing unit1
- direction cosines1
- distribution of stellar density1
- dějiny1
- dějiny astronomie1
- early medieval thinking1
- early-type stars1
- eclipsing binaries1
- education1