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Yusuke HichiharaJapanese astronomer
Date of Birth: 28.03.1897
Country:  Japan |
Content:
- Birth and Early Education
- Academic Journey
- Scientific Contributions
- Expeditions and Publications
- Recognition and Honors
Birth and Early Education
Hiroshi Nomura, a renowned Japanese astronomer, was born in 1921. He graduated from the prestigious Tokyo University in 1921. After completing his undergraduate studies, he pursued further education at the University of Cambridge (1923-1925).
Academic Journey
Nomura's academic journey was marked by appointments at various institutions. He worked at Tokyo University from 1921 to 1957, where he held the position of Professor of Astronomy from 1935 to 1957. From 1957 to 1960, he served as a Professor at Tohoku University. In 1960, he became the President of Utsunomiya University, where he remained until 1964.
Scientific Contributions
Nomura's primary scientific contributions lie in the fields of celestial mechanics and theoretical astrophysics. He conducted extensive research on the secular perturbations and stability of the motion of natural and artificial satellites of celestial bodies. His work on librational phenomena in the motions of planets and satellites, and resonant phenomena in the motion of asteroids, gained significant recognition.
Additionally, Nomura explored various aspects of planetary nebulae theory and conducted studies on astronomical refraction. He also made contributions to the general theory of relativity and cosmology.
Expeditions and Publications
In 1936 and 1948, Nomura participated in expeditions to observe solar eclipses on the island of Hokkaido. He was the author of several influential books on celestial mechanics, including "Foundations of Celestial Mechanics" (1947, 1956), "Stability in Celestial Mechanics" (1957), and "Stability of the Solar System" (1961).
Recognition and Honors
Nomura's contributions to astronomy were acknowledged through various honors and appointments. He became a member of the Japan Academy in 1944 and served as the Vice-President of the International Astronomical Union from 1961 to 1967.
