He began working John Flamsteed, Astronomer Royal, assisting with observations at Oxford and Greenwich. When Flamsteed published his findings in "Philosophical Transactions of the Royal Society" in 1675, he mentioned Halley by name.
In 1695, his friendship with Isaac Newton paid off when that man accepted the position of Master of the Mint and appointed him deputy controller of the mint at Chester.
Armed with Kepler’s Laws of Planetary Motion, and Newton’s theories of elliptical orbit, Halley recognized that the comets of 1456, 1531, 1607, and 1682 all followed similar paths.
After publishing his theory, "Synopsis on Cometary Astronomy", in 1705, it was a matter of waiting for the next return, to prove his theory.
Edmond Halley died January 14, 1742 in Greenwich, England. He did not survive to see the return of the comet, which would later bear his name, on Christmas day in 1758.
