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Animated version of a test plate for Passage de Vénus. Passage de Vénus is a series of photographs of the transit of the planet Venus across the Sun on 9 December 1874. [1] They were purportedly taken in Japan by the French astronomer Jules Janssen and Brazilian engineer Francisco Antônio de Almeida using Janssen's 'photographic revolver ...
The observers were ordered to record the transit in four phases of Venus' journey across of the sun. The first phase was when Venus began "touching" the outside rim of the sun. In the second phase, Venus was completely within the sun's disc, but was still "touching" the outer rim. In the third phase, Venus has crossed the sun, was still ...
Kepler's De raris mirisque Anni 1631 Phaenomenis notice to astronomers of the impending transits of Mercury and Venus, 1631. By the 17th century, two developments allowed for the transits of planets across the face of the Sun to be predicted and observed: the telescope and the new astronomy of Johannes Kepler, which assumed elliptical, rather than circular, planetary orbits.
A NASA spacecraft has captured never-before-seen images of Venus, providing stunning views of the hellishly hot surface of the second rock from the sun. Dark side of Venus revealed in new NASA ...
Venus (and also Mercury) is not visible from Earth when it is full, since at that time it is at superior conjunction, rising and setting concomitantly with the Sun and hence lost in the Sun's glare. Venus is brightest when approximately 25% of its disk is illuminated; this typically occurs 37 days both before (in the evening sky) and after (in ...
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On August 6, 1945, the US dropped an atomic bomb on Hiroshima -- and newly revealed photos shed light on the preparations for the attack.
The Transits of Venus. Amherst, New York: Prometheus Books. ISBN 1-59102-175-8. Whatton, Arundell Blount (1875). Memoir of the Life and Labors of the Rev. Jeremiah Horrox. London: William Hunt and Company. Applebaum, Wilbur (2012). Venus Seen on the Sun: The First Observation of a Transit of Venus by Jeremiah Horrocks. Leiden & Boston: Brill.