The first part of this video shows the transit of Venus on 5-6 June 2012 as seen from SWAP, a solar imager onboard ESA's PROBA2 microsatellite.
SWAP, watching the Sun in EUV light, observes Venus as a small, black circle, obscuring the EUV light emitted from the solar outer atmosphere - the corona - from 19:45UT onwards.
At 22:16UT - Venus started its transit of the solar disk