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Transit of Venus, 8th June 2004


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On June 8, 2004, the first transit of Venus across the Sun since 1882 will occur. In spite of losing the scientific relevance they had in the past, the transits of Venus continue to be astronomical phenomena deserving our attention, most notably because of their exceptionality. Just to mention that there is no human being currently alive that has observed a transit of Venus!!

Given the geometry of the orbits of the Earth and Venus, a transit of the latter across the Sun is accompanied by a second one 8 years later. Thus, on June 6, 2012, we will have a new opportunity (the last one until 2117) of seeing Venus projected on the disc of the Sun. On this occasion, though, the transit will not be visible from Spain.

On the other hand, the history of the transits of Venus is the history of the quest for the determination of the Earth-Sun distance. A history where we find astronomers that, with better or worse fortune, travelled the world to observe this phenomenon with the goal of determining our distance to the Sun, as Halley had proposed in the XVII century.

Through this page, that will be updated during the coming months, we will provide information on the 2004 and 2012 transits of Venus: what they are, how to observe them, their history, etc.

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