The Kvant-1 module contained scientific instruments for astrophysical observations and materials science experiments. It was used to conduct research into the physics of active galaxies, quasars and neutron stars and it was uniquely positioned for studies of the Supernova SN 1987A. Furthermore, it supported biotechnology experiments in anti-viral preparations and fractions. Some additions to Kvant-1 during its lifetime were solar arrays and the Sofora and Rapana girders.