Indian astronomy enthusiasts watch a reflection from a telescope of planet Venus passing across the sun in the eastern Indian city of Calcutta June 8, 2004. The transit of Venus, when the planet drifts across the face of the Sun as it travels between the Sun and the Earth, is so rare that no living being has ever witnessed the celestial event. Five transits of Venus have been recorded - the last occurred in 1882. REUTERS/Jayanta Shaw JS/TW