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- International Astronomical Union (59)
- International Astronomical Union. Symposium (49)
- International Astronomical Union. Colloquium (31)
- United States. National Aeronautics and Space Administration (29)
- 北川, 敏男(1909-1993) (24)
- Hellwege, K. H. (20)
- Hellwege, A. M. (19)
- COSPAR (15)
- NATO Advanced Study Institute (14)
- Needham, Joseph (Noel Joseph Terence Montgomery), 1900-1995 (13)
- 広瀬, 秀雄(1909-1981) (12)
- COSPAR. Plenary Meeting (11)
- Society of Photo-optical Instrumentation Engineers (11)
- International Astronomical Union. General Assembly (10)
- 藤井, 旭(1941-) (10)
- Asimov, Isaac, 1920-1992 (9)
- Einstein, Albert, 1879-1955 (9)
- Rycroft, Michael J. (9)
- 小尾, 信弥(1925-) (9)
- 服部, 昭(1924-) (9)
- 湯川, 秀樹(1907-1981) (9)
- Beer, Arthur, 1900- (8)
- Hoyle, Fred, Sir, 1915-2001 (8)
- Jeffreys, Harold, Sir, 1891- (8)
- Kopal, Zdeněk, 1914- (8)
- Landau, Lev Davidovich, 1908-1968 (8)
- Lunar Science Conference (8)
- Luyten, Willem Jacob, 1899- (8)
- McCormac, Billy Murray (8)
- Moore, Patrick, 1923- (8)
- Page, Lou Williams (8)
- Page, Thornton (8)
- 一松, 信(1926-) (8)
- 宇宙電波懇談会 (8)
- 村山, 信彦(1928-1992) (8)
- 竹内, 均(1921-) (8)
- 萩原, 雄祐(1897-1979) (8)
- Advanced Course of Swiss Society of Astronomy and Astrophysics (7)
- Born, Max, 1882-1970 (7)
- Centre national de la recherche scientifique (France) (7)
- European Southern Observatory (7)
- Hermann, Robert, 1931- (7)
- Kaufmann, William J., 1942- (7)
- Lunar Science Institute (7)
- Runcorn, S. K. (7)
- Schwartz, Laurent, 1915- (7)
- Schweizerische Gesellschaft für Astrophysik und Astronomie (7)
- Thirring, Walter E., 1927- (7)
- 宮本, 正太郎(1912-1992) (7)
- 物理学史研究刊行会 (7)
- Basov, N. G. (Nikolaĭ Gennadievich), 1922- (6)
- Collatz, L. (Lothar), 1910- (6)
- ESLAB Symposium (6)
- Kukarkin, B. V. (6)
- Lifshit︠s︡, E. M. (Evgeniĭ Mikhaĭlovich), 1915- (6)
- Melchior, Paul J. (6)
- Newton, Robert R. (6)
- Pies, Wolfgang (6)
- Schopper, Herwig F. (6)
- Weiss, Alarich (6)
- 佐藤, 文隆(1938-) (6)
- 山高, 昭(1927-) (6)
- 日本物理学会 (6)
- 東京天文台 (6)
- American Astronomical Society (5)
- Burgess, Eric (5)
- Copernicus Symposium (5)
- Copernicus, Nicolaus, 1473-1543 (5)
- Gehrels, Tom, 1925- (5)
- Gingerich, Owen, 1930- (5)
- Henrici, Peter, 1923- (5)
- Holovna astronomichna observatorii︠a︡ (Akademii︠a︡ nauk Ukraïnsʹkoï RSR) (5)
- Horowitz, Richard (5)
- Lanzerotti, Louis J. (5)
- Manned Spacecraft Center (U.S.) (5)
- National Science Foundation (U.S.) (5)
- Optical Society of America (5)
- Parker, E. N. (Eugene Newman), 1927- (5)
- Philip, A. G. Davis (5)
- Ponnamperuma, Cyril, 1923- (5)
- Ruffini, Remo (5)
- Schawlow, Arthur L., 1921- (5)
- Scientific American, Inc (5)
- Szebehely, Victor G., 1921- (5)
- Temam, Roger (5)
- United States. National Aeronautics and Space Administration. Scientific and Technical Information Office (5)
- 中山, 茂(1928-) (5)
- 内田, 正男(1921-) (5)
- 古在, 由秀(1928-) (5)
- 大沢, 清輝 (5)
- 日下, 実男(1926-1979) (5)
- 東京大学史料編纂所 (5)
- 東京大学宇宙航空研究所 (5)
- 東京大学海洋研究所 (5)
- 石田, 晴久(1936-) (5)
- 野尻, 抱影(1885-1977) (5)
- 鈴木, 敬信(1905-) (5)
- 高田, 昇平 (5)
- Akademii︠a︡ nauk SSSR. Astronomicheskiĭ sovet (4)
- Alfvén, Hannes, 1908- (4)