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William Herschel, German-born British astronomer, the founder of sidereal astronomy for the systematic observation of the heavens. He discovered the planet Uranus, hypothesized that nebulae are composed of stars, and developed a theory of stellar evolution.
- The Editors of Encyclopaedia Britannica
Sep 4, 2012 · During this time, Herschel's interest in astronomy grew significantly. He rented a small telescope, and his desire to own a larger instrument led him to the process of grinding...
Herschel published catalogues of nebulae in 1802 (2,500 objects) and in 1820 (5,000 objects). The resolving power of the Herschel telescopes revealed that many objects called nebulae in the Messier catalogue were actually clusters of stars.
Nov 16, 2017 · In 1785 William Herschel was one of the most famous people on Earth, a self-taught astronomer and the first person in well over 2,000 years to add a new planet to the cosmos.
May 14, 2009 · Herschel's main discoveries involved star formation, both in our Milky Way galaxy and in galaxies throughout cosmic history, and of key molecules – among them, water – that have made their way from interstellar clouds to burgeoning planetary systems.
- European Space Agency (ESA)
- Herschel
- Sun-Earth L2 Lagrange Point
- 7,496 pounds (3,400 kilograms)
William Herschel was one of the first 'professional' astronomers, and discovered infrared radiation. His sister Caroline helped him to develop the modern mathematical approach to astronomy. William, son of a musician, was born in Hanover, Germany, in 1738.
Astronomy - Herschel, Milky Way, Stars: Although Herschel’s discovery of Uranus made his reputation, it was far from being his most important contribution. During the 18th century, astronomers had measured the proper motions of a reasonably large number of stars.
