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Scientific Rellevance



Althougth they have lost the scientific rellevance that they had in the past, they are still important phenomena because of their exceptionality.

The history of the Transits of Venus is the history of the Sun-Earth distance determination . A history where you find astronomers that traveled around the world to observe this phenomena. They tried to calculate the distance to the Sun as Halley proposed at the seventeenth century. Nowadays transits are one of a techniques to search planets outside the Solar System. When a planet crosses in front of its star it produces a small change in the star's brightness. This change must be periodic if it is caused by a planet. Analyzing this change in the light received from stars, the presence of an exoplanet can be deduced in some cases. The Kepler Mission from NASA use this technique to explore the structure and diversity of planetary systems.

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