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A transit of Venus takes place when Venus passes directly between the Sun and the Earth (or any other superior planet), becoming visible against (and hence obscuring a small portion of) the solar disk. During a transit, Venus is visible as a small black circle moving across the face of the Sun. Transits of Venus reoccur periodically.
The next transits would occur in 1761 and 1769. Halley died in 1742, almost twenty years before the transit. [7] The viewing of the 1761 transit involved the effort of 120 observers from nine nations. [7] Thomas Hornsby reported the observations as unsuccessful primarily due to poor weather conditions.
2004 transit of Venus across the Sun. Transits of Venus directly between the Earth and the Sun's visible disc are rare astronomical events. The first such transit to be predicted and observed was the Transit of Venus, 1639, seen and recorded by English astronomers Jeremiah Horrocks and William Crabtree.
One type of transit involves the motion of a planet between a terrestrial observer and the Sun. This can happen only with inferior planets, namely Mercury and Venus (see transit of Mercury and transit of Venus). However, because a transit is dependent on the point of observation, the Earth itself transits the Sun if observed from Mars
The 1874 transit of Venus, which took place on 9 December 1874 (01:49 to 06:26 UTC), was the first of the pair of transits of Venus that took place in the 19th century, with the second transit occurring eight years later in 1882. The previous pair of transits had taken place in 1761 and 1769, and the next pair would not take place until 2004 ...
1639 transit of Venus; 1769 transit of Venus observed from Tahiti; 1874 transit of Venus; 1874 Transit of Venus Expedition to Campbell Island; 1874 Transit of Venus Expedition to Hawaii; 1882 transit of Venus; 2004 transit of Venus; 2012 transit of Venus
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The transit as seen from Japan by Pierre Janssen Map showing the visibility of the 1874 transit of Venus. The 1874 transit of Venus, which took place on 9 December 1874 (01:49 to 06:26 UTC), [1] [n 1] was the first of the pair of transits of Venus that took place in the 19th century, with the second transit occurring eight years later in 1882.