Visibility of the Venus transit today and tomorrow

WARNING!

Direct viewing of the Sun with the naked eye or through open telescopes or binoculars should be avoided. Indirect observation of a projected image is advised.

Transit times

Venus transit 5th-6th June 2012: image BBC

BBC: Venus transits occur four times in approximately 243 years; more precisely, they appear in pairs of events separated by about eight years and these pairs are separated by about 105 or 121 years. The reason for the long intervals lies in the fact that the orbits of Venus and Earth do not lie in the same plane and a transit can only occur if both planets and the Sun are situated exactly on one line.

This has happened only seven times in the telescopic age: in 1631, 1639, 1761, 1769, 1874, 1882 and 2004. Once the latest transit has passed, the next pair will not occur until 2117 and 2125. Most people alive today will probably be dead by then.

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