Arthur Storer (1645–1687) was a pioneering astronomer in colonial British America, remembered today chiefly for his association and correspondence with Isaac Newton. Storer was born in Buckminster, Leicestershire, England, but moved to Grantham, Lincolnshire shortly after, due to his widowed mother remarrying apothecary William Clarke who worked across the border. He eventually emigrated as an adult to Calvert County, in the Province of Maryland. He carried out careful astronomical observations using self-made instruments, and has been described as "the first astronomer in the American colonies" and as "Maryland's first scientist". His most notable observations were those of the Great Comet of 1680 and of the Comet of 1682 (later known as Halley's Comet).
Storer's maternal uncle was the Rev. Humphrey Babington, who was the Anglican rector of Boothby Pagnell in Lincolnshire and a senior fellow of Trinity College, Cambridge. Storer's stepfather was William Clarke, who was the apothecary of Grantham and who provided lodgings to the adolescent Isaac Newton during his time as a student at The King's School, Grantham. Some sources indicate that Arthur Storer was also an apothecary, but no direct evidence of this has survived.
Connection to Isaac Newton
thumb|right|[[Blue plaque honoring Storer at The King's School, Grantham.]]
Arthur Storer was the son of Katherine née Babington, sister of the Rev. Humphrey Babington, who was rector of Boothby Pagnell, as well as senior fellow, bursar, and vice-master of Trinity College, in the University of Cambridge. At about dawn on August 14, 1682, looking westward over the Patuxent River near Hunting Creek, Storer first noticed another comet, which remained visible until September 18, 1682. Storer's observations of that comet were second in accuracy only those carried out the Astronomer Royal John Flamsteed at the Royal Observatory, Greenwich.