Tania Ivanova

One of the most important Bulgarian scientific achievements in the space research was the program "Bulgaria-1300", realized in 1981 in honor of the 1300th anniversary of the founding of our country, including two satellites. The first satellite "Intercosmos-Bulgaria-1300" was launched on 07.08.1981 into nearly polar
orbit with an altitude of about 900 km with a complex of 11 Bulgarian scientific instruments for space plasma measurement and studying the ionosphere-magnetosphere interactions, as well as the laser reflector for geodetic measurements. The second satellite "Meteor-Priroda" with scientific instrumentation for remote sensing, developed with the participation of Bulgarian scientists was launched on 10.07.1981 in 650 km sun-synchronous orbit. The scientific results from the processed satellite information are world wide used and published up to now.