Wikipedia
PW-Sat
PW-Sat is a series of satellites that includes the first Polish artificial satellite which was launched 13 February 2012 from ELA-1 at Guiana Space Centre aboard Italian-built Vega launch vehicle during its maiden voyage. PW-Sat1's mission was to test experimental elastic solar cells, as well as an orbital decay technology consisting of a "tail" designed to speed re-entry. It was expected to last for 1 year.
PW-Sat1 was a type of CubeSat satellite constructed by the Faculty of Power and Aeronautical Engineering of Warsaw University of Technology in cooperation with the Space Research Centre of the Polish Academy of Sciences.