Jeremiah Horrocks


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Horrocks, Jeremiah

 

(also Horrox). Born circa 1617; died 1641. English astronomer.

Horrocks introduced improvements in the theory of lunar motion. Even before I. Newton’s discovery of the law of universal gravitation, he had conjectured that the disparities in the lunar motion were the result of the perturbing influence of the sun, and he noted several irregularities in the motions of the Saturn and Jupiter. Horrocks calculated in advance the transit of Venus across the sun’s disk (1639) and was the first to observe the phenomenon.

References in periodicals archive ?
The winning submissions include Gemma Seddon's Space Duck design based on Toxteth born Jeremiah Horrocks as one of the founding fathers of British Astronomy.
One of my transit tales was about Jeremiah Horrocks, the first observer of a transit, in 1639.
In the 1600s when Jeremiah Horrocks first discovered we could do this it was probably one of the biggest scientific breakthroughs ever - it meant we could find out how big the solar system was and how big everything else was," said the 27-year-old.
It commemorates the brilliant astronomer Jeremiah Horrocks from Toxteth Park, who died in 1642 aged just 22, and has been put in place as part of the Liverpool Discovers festival of street art.
HAPPENED THIS DAY 1639 Jeremiah Horrocks became the first astronomer to observe the transit of Venus.
The first recorded Venus transit was observed by two English amateurs: Jeremiah Horrocks and William Crabtree in 1639.
Stephenson describes the work of two authors who did try to grapple with Kepler's complicated theories, the English astronomer Jeremiah Horrocks and the Italian Jesuit Giovanni Battista Riccioli (who wrote on the history of astronomy), and he is the first to give these authors deserved recognition.
Venus Seen on the Sun: The First Observation of a Transit of Venus by Jeremiah Horrocks
RE: YOUR article in the Daily Post of February 15 about the "Interactive Sculpture" dedicated to Jeremiah Horrocks.
It will only be the sixth time the event will have been seen since the first recorded sighting by British astronomer Jeremiah Horrocks in 1639.
Horrocks Avenue, L19: Jeremiah Horrocks, known as the founder of English astronomy, was born in the Lower Lodge of Toxteth Park in 1619.
I would dispute that Jeremiah Horrocks calculated the length of the astronomical unit as 180 million km (my reading of his calculations suggests half that value) but certainly his estimate was much greater than received wisdom at the time.