Poland 1965 : International Quiet Sun Year // Set of 6 stamps

Poland 1965 : International Quiet Sun Year // Set of 6 stamps

• Fischer 1457-1462 | Michel 1606-1611 | Scott 1343-1345, 1343a-1345a 
• Year of issue 1965 | People's Republic of Poland
• The International Quiet Sun Year (IQSY).

1457 IQSY emblem

1458 IQSY emblem

1459 Radio telescope, solar observatory

1460 Radio telescope, solar observatory

1461 Solar system

1462 Solar system

Glossary
The period from 1 January 1964 to 31 December 1965, near solar minimum, when solar and geophysical phenomena were studied by observatories around the world and by spacecraft to improve our understanding of solar-terrestrial relations.
Translations
Międzynarodowe lata spokojnego słońca = The international year of the quiet sun.

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