a fireball or possibly a comet
Stato: U.S.S.R. Anno: 1957 Notizie: In 1957 the Soviet Union issued a stamp commemorating meteorite studies during the International Geophysical Year. The stamp depicts a fireball (or, possibly, a comet) over an observatory. The International Geophysical Year (IGY) was an eighteen month period from July 1957 through December 1958 coinciding with a period of maximum sunspot activity. Scientists from sixty-seven different countries cooperated to study the solar-terrestrial environment. The Scott number for this stamp is 1958. |
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