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Gerard Peter Kuiper (English: /ˈkpər/; Dutch pronunciation: [ˈkœypər]; born Gerrit Pieter Kuiper; 7 December 1905 – 23 December 1973) was a Dutch astronomer, planetary scientist, selenographer, author and professor. He is the eponymous namesake of the Kuiper belt.

Gerard Kuiper
Gerard Kuiper in August 1964
Born
Gerrit Pieter Kuiper

(1905-12-07)7 December 1905
Tuitjenhorn, Netherlands
Died23 December 1973(1973-12-23) (aged 68)
Mexico City, Mexico
NationalityDutch–American
Alma materLeiden University
(Master of Science, Master of Physics, Doctor of Philosophy, Doctor of Science)
OccupationAstronomer
Planetary scientist
Selenographer
Author
professor
Known forKuiper belt
SpouseSarah Fuller (1936–1973; his death)
Scientific career
FieldsAstronomy
ThesisStatistische onderzoekingen van dubbelsterren (1933)
Doctoral studentsCarl Sagan

Kuiper is considered by many to be the father of modern planetary science.[1]


Early life and career


Kuiper, the son of a tailor in the village of Tuitjenhorn in North Holland, had an early interest in astronomy. He had extraordinarily sharp eyesight, allowing him to see with the naked eye magnitude 7.5 stars, about four times fainter than those visible to normal eyes.

He studied at Leiden University in 1924, where at the time a very large number of astronomers had congregated. He befriended fellow students Bart Bok and Pieter Oosterhoff, and was taught by Ejnar Hertzsprung, Antonie Pannekoek, Willem de Sitter, Jan Woltjer, Jan Oort, and the physicist Paul Ehrenfest. He received his candidate degree in Astronomy in 1927 and continued straight on with his graduate studies.

Kuiper finished his doctoral thesis on binary stars with Hertzsprung in 1933, after which he traveled to California to become a fellow under Robert Grant Aitken at the Lick Observatory. In 1935 he left to work at the Harvard College Observatory, where he met Sarah Parker Fuller, whom he married on 20 June 1936. Although he had planned to move to Java to work at the Bosscha Observatory, he took a position at Yerkes Observatory of the University of Chicago and became an American citizen in 1937.

From 1947 to 1949, Kuiper served as the director of the McDonald Observatory in west Texas.[2] In 1949, Kuiper initiated the Yerkes–McDonald asteroid survey (1950–1952).

As professor at the University of Chicago, he was dissertation advisor to Carl Sagan. In 1958, the two worked on the classified military Project A119, a secret Air Force plan to detonate a nuclear warhead on the Moon.


Discoveries


Kuiper discovered two natural satellites of planets in the Solar System, namely Uranus's satellite Miranda and Neptune's satellite Nereid. In addition, he discovered carbon dioxide in the atmosphere of Mars, and the existence of a methane-laced atmosphere above Saturn's satellite Titan in 1944. Kuiper also pioneered airborne infrared observing using a Convair 990 aircraft in the 1960s.

Kuiper spent most of his career at the University of Chicago, but moved to Tucson, Arizona, in 1960 to found the Lunar and Planetary Laboratory at the University of Arizona. Kuiper served as the laboratory's director for the rest of his life. One of the three buildings at Arizona that makes up the LPL is named in his honor.

In the 1950s Kuiper's interdisciplinary collaboration with the geochemist and Nobel Laureate Harold C. Urey to understand the Moon's thermal evolution descended into acrimony, as the two engaged in what became known as the "Hot Moon Cold Moon" controversy. Their falling out, in part a scientific dispute, also reflected the challenge of maintaining professional relationships across overlapping but distinct scientific disciplines.[3]

In the 1960s, Kuiper helped identify landing sites on the Moon for the Apollo program.[lower-alpha 1] His earlier work on the Moon included the Project A119, a secret Air Force plan to detonate a nuclear warhead on the Moon.[5] Another scientist in the group was Carl Sagan, who was Kuiper's PhD student at the time of the project.[5]

Kuiper discovered several binary stars which received "Kuiper numbers" to identify them, such as KUI 79.


Death


Kuiper died of a heart attack on 23 December 1973 in Mexico City, while on vacation with his wife.[6]


Honors


Gerard P. Kuiper Space Sciences building at the University of Arizona
Gerard P. Kuiper Space Sciences building at the University of Arizona

Besides the minor planet 1776 Kuiper, three craters (Mercurian, lunar, and Martian), Kuiper Scarp in Antarctica, and the now-decommissioned Kuiper Airborne Observatory was also named after him.

Astronomers refer to a region of minor planets beyond Neptune as the "Kuiper belt", since Kuiper had suggested that such small planets or comets may have formed there. However Kuiper himself believed that such objects would have been swept clear by planetary gravitational perturbations, so that none or few would exist there today.[citation needed]

The Kuiper Prize, named in his honor, is the most distinguished award given by the American Astronomical Society's Division for Planetary Sciences, an international society of professional planetary scientists.[lower-alpha 2]

Episode 6 ("The Man of a Trillion Worlds") of the TV series Cosmos: Possible Worlds featured the Kuiper–Urey conflict.


Notes


  1. Cameras in Ranger VIII were turned on 23 minutes before impact, and the spacecraft transmitted pictures back to earth until it struck the surface and was destroyed. The flight's product would be intensively studied by a panel of noted lunar scientists, among them Gerard P. Kuiper and Ewen A. Whitaker of the University of Arizona and Harold C. Urey of the University of California.     — Brooks & Ertel (1976, p. 75)[4]
  2. The Kuiper Prize recognizes outstanding contributors to planetary science, and is awarded annually to scientists whose lifetime achievements have most advanced our understanding of planetary systems. Winners of this award include Carl Sagan, James Van Allen, and Eugene Shoemaker.

References


  1. "NASA Solar System Exploration". solarsystem.nasa.gov. National Aeronautics and Space Administration (NASA). Archived from the original on 11 April 2015. Retrieved 12 April 2015.
  2. "Milestones". McDonald Observatory. Retrieved 25 November 2020.
  3. Doel, Ronald E. (1996). Solar System Astronomy in America: Communities, patronage, and interdisciplinary science, 1920–1960. New York: Cambridge University Press. ISBN 9780521115681.
  4. Brooks, Courtney G.; Ertel, Ivan D. (1976). The Apollo Spacecraft: A chronology. Scientific and Technical Information Division, Office of Technology Use. National Aeronautics and Space Administration (NASA). p. 75.
  5. Ulivi, Paolo (2004). Lunar Exploration: Human pioneers and robotic surveyors. Springer Science & Business Media. p. 20. ISBN 978-1-85233-746-9.
  6. Williams, Matt (11 November 2015). "Who was Gerard Kuiper?". Universe Today. Retrieved 24 March 2020.



На других языках


[de] Gerard Peter Kuiper

Gerard Peter Kuiper, eigentlich Gerrit Pieter Kuiper (* 7. Dezember 1905 in Harenkarspel; † 24. Dezember 1973 in Mexiko-Stadt), Nachname gesprochen [.mw-parser-output .IPA a{text-decoration:none}ˈkœypər], war ein US-amerikanischer Astronom, Selenograph und Planetologe niederländischer Herkunft.[1] Nach ihm wurde der Kuipergürtel benannt.
- [en] Gerard Kuiper

[es] Gerard Kuiper

Gerard Peter Kuiper [ˈdʒɛɾəld ˈpiːtɚ ˈkœypər] (nombre original en neerlandés: Gerrit Pieter Kuiper [/ˈχɛrit ˈpitər ˈkœypər]; Harenkarspel, 7 de diciembre de 1905-Ciudad de México, 24 de diciembre de 1973) fue un astrónomo neerlandés nacionalizado estadounidense.[1] Educador activo, como astrónomo tiene en su haber el haber sugerido la existencia del denominado cinturón de Kuiper y el descubrimiento de las lunas Nereida (de Neptuno) y Miranda (de Urano).

[fr] Gerard Kuiper

Gerard Kuiper (/ˈkœy.pər/), né Gerrit Pieter Kuiper[1] le 7 décembre 1905 à Harenkarspel aux Pays-Bas et mort le 23 décembre 1973 à Mexico, est un astronome néerlandais et américain. Né et formé aux Pays-Bas, il arriva aux États-Unis en 1933 et devint citoyen américain en 1937.

[it] Gerard Peter Kuiper

Gerard Peter Kuiper (IPA: /ˈkaɪp.ə/), nato Gerrit Pieter Kuiper (Harenkarspel, 7 dicembre 1905 – Città del Messico, 23 dicembre 1973) è stato un astronomo olandese naturalizzato statunitense.

[ru] Койпер, Джерард Петер

Дже́рард Пе́тер Ко́йпер (англ. Gerard Peter Kuiper[5], нидерл. Gerrit Pieter Kuiper[6], 7 декабря 1905 — 23 декабря 1973) — нидерландский и американский (с 1933 года) астроном.



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