The two crew members were Anatoli Soloviyov (Commander) and Aleksandr Balandin (Flight Engineer).
[1] While on board, the crew conducted an extensive programme of geophysical and astrophysical research, experiments on biology and biotechnology and work on space materials science.
They started the commercial production of crystal in highest quality for a US electronics company.
A first EVA was conducted on 17 July 1990, lasting 7h 16m, in which Soyuz TM-9 was repaired after three of eight thermal blankets had come loose near the heat shield.
Another EVA was performed on 26 July 1990 (3h 31m), in order to repair the Kvant2 Module hatch, but this failed.