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{{Short description|Soviet astronomer (1917–1999)}}
'''Viktor Sergeevich Safronov''' ({{lang-ru|Виктор Сергеевич Сафронов}}) (born Velikie Luki, Russia, 11 October 1917 - died Moscow 18 September 1999) was a [[Soviet Union|Soviet]] [[astronomer]] who put forward the low-mass-nebula model of planet formation, a consistent picture of how the [[planet]]s formed from a disk of gas and dust around the [[Sun]].
'''Viktor Sergeevich Safronov''' ({{lang-ru|Ви́ктор Серге́евич Сафро́нов}}) (born Velikie Luki; 11 October 1917 in [[Russia]] – 18 September 1999 in [[Moscow]], Russia) was a [[Soviet Union|Soviet]] [[astronomer]] who put forward the low-mass-nebula model of planet formation, a consistent picture of how the [[Accretion (astrophysics)|planets formed]] from a disk of gas and dust around the [[Sun]].


==Biography and legacy==
==Biography and legacy==
Safronov graduated from [[MSU Department of Mechanics and Mathematics]] in 1941. He defended a dissertation for the Doctor of Physical and Mathematical Sciences in 1968. His scientific interests were planetary [[cosmogony]], [[astrophysics]] and [[geophysics]].
Safronov graduated from [[MSU Department of Mechanics and Mathematics|Moscow State University Department of Mechanics and Mathematics]] in 1941. He defended a dissertation for the Doctor of Physical and Mathematical Sciences in 1968. His scientific interests covered planetary [[cosmogony]], [[astrophysics]] and [[geophysics]].


His [[planetesimal]] hypothesis of planet formation is still widely accepted among astronomers, although alternative theories exist (such as the gravitational fragmentation of the [[protoplanetary disk]] directly into planets).
His [[planetesimal]] hypothesis of planet formation is still widely accepted among astronomers, although alternative theories exist (such as the gravitational fragmentation of the [[protoplanetary disk]] directly into planets).


A [[minor planet]] [[3615 Safronov]], discovered by [[United States|American]] astronomer [[Edward L. G. Bowell]] in 1983 is named after him. <ref>{{cite book | last = Schmadel | first = Lutz D. | coauthors = | title = Dictionary of Minor Planet Names | edition = 5th | year = 2003 | publisher = Springer Verlag | location = New York | url = http://books.google.com/books?q=3613+kunlun | isbn = 3-540-00238-3 | page = 304}}</ref> Safronov's work is discussed at length in the BBC documentary [[The Planets (TV_miniseries)]]
A [[minor planet]], [[3615 Safronov]], discovered by [[United States|US-American]] astronomer [[Edward L. G. Bowell]] in 1983, is named after him,<ref>
{{cite book
| last = Schmadel
| first = Lutz D. | title = Dictionary of Minor Planet Names
| edition = 5th | year = 2003
| publisher = Springer Verlag
| location = New York
| isbn = 3-540-00238-3 | page = 304
}}
</ref>
as is [[Safronov Regio]] on Pluto.

The 1999 BBC documentary miniseries ''[[The Planets (1999 TV series)|The Planets]]'' discusses Safronov's work at length.


==Awards==
==Awards==
*''[[Otto Schmidt]] [[USSR Academy of Sciences]] Prize'' (1974)
*''[[Otto Schmidt]] [[USSR Academy of Sciences]] Prize'' (1974)
*''Leonard Prize Meteoritical Society'' (1989)
*''[[Kuiper Prize]] in Planetary Science'' (1990)
*''[[Kuiper Prize]] in Planetary Science'' (1990)


== List of selected publications ==
== List of selected publications ==
*''Evolution of the Protoplanetary Cloud and Formation of the Earth and the Planets.'' Moscow: [[Nauka|Nauka Press]], 1969. Trans. NASA TTF 677, 1972.
*''Evolution of the Protoplanetary Cloud and Formation of the Earth and the Planets.'' Moscow: [[Nauka (publisher)|Nauka Press]], 1969. Trans. NASA TTF 677, 1972.

==See also==
*[[Accretion (astrophysics)]]
*[[George Wetherill]]


==References==
==References==
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==External links==
==External links==
*[http://dps.aas.org/prizes/kuiper List of Gerard Kuiper award recipients] at the website of [[American Astronomical Society]]
*[http://dps.aas.org/prizes/kuiper List of Gerard Kuiper award recipients] at the website of [[American Astronomical Society]]
*{{ru icon}} [http://www.scgis.ru/russian/cp1251/h_dgggms/2-99/strakhov.htm A short biography]
*{{in lang|ru}} [https://archive.today/20020109180414/http://www.scgis.ru/russian/cp1251/h_dgggms/2-99/strakhov.htm A short biography]


{{Authority control|VIAF=36110539}}
{{Authority control}}


{{Persondata <!-- Metadata: see [[Wikipedia:Persondata]]. -->
| NAME = Safronov, Viktor
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION =
| DATE OF BIRTH =
| PLACE OF BIRTH =
| DATE OF DEATH =
| PLACE OF DEATH =
}}
{{DEFAULTSORT:Safronov, Viktor}}
{{DEFAULTSORT:Safronov, Viktor}}
[[Category:Russian geophysicists|Safronov]]
[[Category:Russian geophysicists|Safronov]]
⚫
[[Category:Russian astronomers]]
[[Category:Soviet astronomers]]
[[Category:Soviet astronomers]]
[[Category:20th-century astronomers]]
[[Category:1917 births]]
[[Category:1917 births]]
[[Category:1999 deaths]]
[[Category:1999 deaths]]
[[Category:Moscow State University alumni]]

⚫
[[Category:Russian scientists]]


{{russia-scientist-stub}}
{{russia-scientist-stub}}
{{europe-astronomer-stub}}
{{europe-astronomer-stub}}

[[cs:Viktor Sergejevič Safronov]]
[[fr:Viktor Safronov]]
[[it:Viktor Sergeevič Safronov]]
[[ja:ヴィクトル・サフロノフ]]
[[ru:Сафронов, Виктор Сергеевич]]

Revision as of 18:04, 9 March 2024

Viktor Sergeevich Safronov (Russian: Ви́ктор Серге́евич Сафро́нов) (born Velikie Luki; 11 October 1917 in Russia – 18 September 1999 in Moscow, Russia) was a Soviet astronomer who put forward the low-mass-nebula model of planet formation, a consistent picture of how the planets formed from a disk of gas and dust around the Sun.

Biography and legacy

Safronov graduated from Moscow State University Department of Mechanics and Mathematics in 1941. He defended a dissertation for the Doctor of Physical and Mathematical Sciences in 1968. His scientific interests covered planetary cosmogony, astrophysics and geophysics.

His planetesimal hypothesis of planet formation is still widely accepted among astronomers, although alternative theories exist (such as the gravitational fragmentation of the protoplanetary disk directly into planets).

A minor planet, 3615 Safronov, discovered by US-American astronomer Edward L. G. Bowell in 1983, is named after him,[1] as is Safronov Regio on Pluto.

The 1999 BBC documentary miniseries The Planets discusses Safronov's work at length.

Awards

List of selected publications

  • Evolution of the Protoplanetary Cloud and Formation of the Earth and the Planets. Moscow: Nauka Press, 1969. Trans. NASA TTF 677, 1972.

See also

References

  1. ^ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names (5th ed.). New York: Springer Verlag. p. 304. ISBN 3-540-00238-3.

External links

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