a German astronomer who became famous for recovering Comet 1P/Halley (better known as Halley's Comet or Comet Halley) on Christmas Day, 1758. The periodic nature of this comet had been deduced by its namesake Edmond Halley in 1705, but Halley had died before see...

a German astronomer who became famous for recovering Comet 1P/Halley (better known as Halley's Comet or Comet Halley) on Christmas Day, 1758. The periodic nature of this comet had been deduced by its namesake Edmond Halley in 1705, but Halley had died before seeing if his prediction would come true.

an Anglo-Irish astronomer who had several telescopes built. His 72-inch telescope, built in 1845 and colloquially known of as the "Leviathan of Parsonstown", was the world's largest telescope, in terms of aperture size, until the early 20th century. Lord Rosse performed astronomical studies and discovered the spiral nature of some nebulas, today known to be ...

an Anglo-Irish astronomer who had several telescopes built. His 72-inch telescope, built in 1845 and colloquially known of as the "Leviathan of Parsonstown", was the world's largest telescope, in terms of aperture size, until the early 20th century. Lord Rosse performed astronomical studies and discovered the spiral nature of some nebulas, today known to be spiral galaxies.

an English-born American organist, harpsichordist, teacher and composer. Pelham was born in London. His father, also named Peter Pelham, was an engraver and an artist. Around 1730 the Pelhams immigrated to Boston. In 1744 Pelham became first organist of Trinity Church in Boston. Although several collections he compiled of music by other composers are extant,...

an English-born American organist, harpsichordist, teacher and composer. Pelham was born in London. His father, also named Peter Pelham, was an engraver and an artist. Around 1730 the Pelhams immigrated to Boston. In 1744 Pelham became first organist of Trinity Church in Boston. Although several collections he compiled of music by other composers are extant, almost none of his own music survives, save for a short harpsichord minuet.

a German astronomer. He was the father of astronomer Carl Friedrich Wilhelm Peters. He was born in Hamburg and died in Kiel. Peters was the son of a merchant and, although he did not attend secondary school regularly, he obtained a good knowledge of mathematics and astronomy. In 1826 he became assistant to Heinrich Christian Schumacher at Altona Observatory ...

a German astronomer. He was the father of astronomer Carl Friedrich Wilhelm Peters. He was born in Hamburg and died in Kiel. Peters was the son of a merchant and, although he did not attend secondary school regularly, he obtained a good knowledge of mathematics and astronomy. In 1826 he became assistant to Heinrich Christian Schumacher at Altona Observatory (de). Schumacher encouraged him to study astronomy and Peters did a PhD under Friedrich Bessel at the University of Königsberg. In 1834 he became an assistant at Hamburg Observatory and in 1839 joined the staff of Pulkovo Observatory. In 1849 he became professor of astronomy at Königsberg and soon after succeeded Friedrich Wilhelm Bessel as director of the observatory there. In 1854 he became director of Altona Observatory and editor of the Astronomische Nachrichten.

a German–American astronomer, and a pioneer in the study of asteroids. He was born in Koldenbüttel in Schleswig, then part of Denmark but later part of Germany, and later studied under Carl Friedrich Gauss. Peters spoke many languages and gravitated to Italy at the time of the Italian unification. His association with radical groups brought him to the att...

a German–American astronomer, and a pioneer in the study of asteroids. He was born in Koldenbüttel in Schleswig, then part of Denmark but later part of Germany, and later studied under Carl Friedrich Gauss. Peters spoke many languages and gravitated to Italy at the time of the Italian unification. His association with radical groups brought him to the attention of authorities, and he fled to the Ottoman Empire, where he became a government advisor. At the suggestion of the resident U.S. consul, he emigrated to the United States in 1854.

a Flemish astronomer, cartographer and clergyman. In 1589 he collaborated with the Amsterdam cartographer Jacob Floris van Langren on a 32.5-cm celestial globe, which, using the sparse information available about southern celestial features, for the first time depicted: Crux the southern cross, Triangulum Australe the southern triangle, and the Magellanic Cl...

a Flemish astronomer, cartographer and clergyman. In 1589 he collaborated with the Amsterdam cartographer Jacob Floris van Langren on a 32.5-cm celestial globe, which, using the sparse information available about southern celestial features, for the first time depicted: Crux the southern cross, Triangulum Australe the southern triangle, and the Magellanic Clouds, Nubecula Major and Minor.

a renowned English astronomer who became the sixth Astronomer Royal, serving from 1811 to 1835. In 1800 Pond settled at Westbury near Bristol, and began to determine star-places with a fine altitude and azimuth circle of 2 1?2 feet (760 mm) in diameter by Edward Troughton. His demonstration in 1806 of a change of form in the Greenwich mural quadrant led to t...

a renowned English astronomer who became the sixth Astronomer Royal, serving from 1811 to 1835. In 1800 Pond settled at Westbury near Bristol, and began to determine star-places with a fine altitude and azimuth circle of 2 1?2 feet (760 mm) in diameter by Edward Troughton. His demonstration in 1806 of a change of form in the Greenwich mural quadrant led to the introduction of astronomical circles at the Royal Greenwich Observatory and to his own appointment as its head.

a British clergyman, astronomer and mathematician. A Cambridge Apostle, he joined the British East India Company in 1838 as a chaplain and later became Archdeacon at Calcutta. A gifted mathematician who applied his mind to problems of geodesy and earth science, he was approached by the Surveyor General of India to examine the errors in surveys resulting from...

a British clergyman, astronomer and mathematician. A Cambridge Apostle, he joined the British East India Company in 1838 as a chaplain and later became Archdeacon at Calcutta. A gifted mathematician who applied his mind to problems of geodesy and earth science, he was approached by the Surveyor General of India to examine the errors in surveys resulting from the attraction of the plumb-line to the mass of the Himalayan mountains. This led him to develop a theory based on a fluid earth of crustal balance which became the basis for the isostasy principle. He died in India of cholera on a visit to Ghazipur.