selected
Jeremiah Horrocks and William Crabtree made the first successful observation of a transit of Venus (example pictured) from Earth.
Related Wikipedia articles
Jeremiah Horrocks
English astronomer (1618–1641)
Jeremiah Horrocks, sometimes given as Jeremiah Horrox, was an English astronomer. He was the first person to demonstrate that the Moon moved around the Earth in an elliptical orbit; and he was the only person to predict the transit of Venus of 1639, an event which he and his…Source: Wikipedia (CC BY-SA)
William Crabtree
English astronomer, mathematician, and merchant (1610–1644)
William Crabtree was an English astronomer, mathematician, and merchant from Broughton, then in the Hundred of Salford, Lancashire, England. He was one of only two people to observe and record the first predicted transit of Venus in 1639.Source: Wikipedia (CC BY-SA)
1639 transit of Venus
Earliest certainly recorded transit of Venus
The first known observations and recording of a transit of Venus were made in 1639 by the English astronomers Jeremiah Horrocks and his friend and correspondent William Crabtree. The pair made their observations independently on 4 December that year ; Horrocks from Carr House,…Source: Wikipedia (CC BY-SA)
Transit of Venus
Astronomical transit of Venus across the Sun
A transit of Venus takes place when Venus passes directly between the Sun and the Earth, becoming visible against the solar disk. During a transit, Venus is visible as a small black circle moving across the face of the Sun.Source: Wikipedia (CC BY-SA)