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Hilkka Rantaseppä-Helenius (1925 – 1975) was a Finnish astronomer. __NOTOC__ ==Biography== Rantaseppä-Helenius began studying mathematics in hopes of becoming a teacher. Finnish astronomer Yrjö Väisälä inspired her to become an astronomer instead. Rantaseppä-Helenius worked on observing minor planets. She worked as an assistant at Tuorla Observatory from 1956 to 1962. In 1962 she became an observer when a vacancy became available. She remained an observer until 1975. She was also involved in building the Kevola Observatory by Tähtitieteellis-optillinen seura (Astronomy-Optical Society) on her own property in 1963. Rantaseppä-Helenius died at age 50 in an accident. The asteroid 1530 Rantaseppä is named after her. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hilkka Rantaseppä-Helenius」の詳細全文を読む スポンサード リンク
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