IASB-BIRA participated in the worldwide observation of the Venus Transit (5-6 June 2012). IASB-BIRA is involved in the Venus Express mission of ESA with the SOIR instrument. SOIR was operated through out the complete duration of the transit of Venus and its observations were compared to observations performed with instruments on Earth or with the Hubble Space Telescope. Moreover, our scientists observed the transit from the Svalbard Observatory (in Norway).