@ARTICLE{Ziółkowski_Krzysztof_50_2007,
 author={Ziółkowski, Krzysztof},
 number={Nr 4 (16) 2007 Spaces},
 journal={ACADEMIA. The magazine of the Polish Academy of Sciences},
 pages={8-11},
 howpublished={online},
 year={2007},
 publisher={Polish Academy of Sciences},
 language={eng},
 abstract={We have now reached the 50th anniversary of when mankind first began exploring space - the traditional start of the "space era" came with the launch of the first artificial satellite on 4 October 1957, followed by the first manned spaceflight on 12 April 1961. Nowadays we rarely stop to notice how many aspects of our daily lives are derived from this half-century of space research.},
 type={Article},
 title={50 Years in Space},
 URL={http://journals.pan.pl/Content/128861/PDF-MASTER/5_ACADEMIA_EN_4_16_2007_Ziolkowski_50.pdf},
}