During the recent Venus transit (June 2012), the planet appeared as a tiny black circle moving on the Sun. The black colour on the sun is because the planet :
UNODC is abbreviated as United Nations Office on Drugs and Crime. It is a global leader in the fight against illicit drugs and international crime. Established in 1997 through a merger between the United Nations Drug Control Programme and the Centre for International Crime Prevention, UNODC operates in all regions of the world through an extensive network of field offices.