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Hronika osvoeniya kosmosa: 1951 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1952 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1953 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1954 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1955 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1956 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1957 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1958 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Hronika osvoeniya kosmosa: 1959 god.
A. B. Zheleznyakov/Enciklopediya Kosmonavtika,
7 yanvarya 2001
Tiho Brage -- chelovek, izmerivshii nebo
6.01.2001 | Astronomicheskaya kartinka dnya
Tiho Brage (1546–1601)
byl samym akkuratnym
astronomom-nablyudatelem svoei epohi. Vsyu svoyu zhizn' on posvyatil
resheniyu naibolee aktual'noi iz stoyavshih togda pered astronomiei
problem, pytayas' vyyasnit', chto zhe yavlyaetsya centrom
Solnechnoi Sistemy –
Zemlya ili
Solnce.
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