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Oort cloud

The Oort cloud (pronounced /ɔːrt/ ORT or /ʊərt/ OORT), sometimes called the Öpik–Oort cloud, is theorized to be a cloud of billions of icy planetesimals surrounding the Sun at distances ranging from 2,000 to 200,000 AU (0.03 to 3.2 light-years). Its existence was proposed in 1950 by the Dutch astronomer Jan Oort, in whose honor the idea was later named.…

Development of theory, Stellar perturbations and stellar companion hypotheses & Structure and composition

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Development of theory

IsotropicEcliptic planeKuiper cliffNeptune177P/Barnard
19 related topics

Stellar perturbations and stellar companion hypotheses

Molecular cloudsScholz's StarGliese 710PhysicistRichard A. Muller
16 related topics

Structure and composition

TorusJack G. HillsAbsolute magnitudeWaterMethane
12 related topics

Comets

C/1999 F1 (Catalina)C/2006 P1 (McNaught)C/2010 X1 (Elenin)Comet ISONC/2013 A1 (Siding Spring)
12 related topics

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Overview

Development of theory

Structure and composition

Origin

Comets

Sedna and similar objects

Tidal effects

Stellar perturbations and stellar companion hypotheses

Future exploration

Advanced semantic analysis

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Map overview Semantic statistics

Oort cloud

Nodes123
Edges122
Triples164
Avg. degree1.98
Density0.01626
Components1

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Oort cloud

Top relations

related to Further reading · 44
Oort cloud → A36, A96, Arnett, Astronomical Institutes, Astronomy, Astrophysics, Batygin, Bibcode, Bill, Brasser, Bulletin, Dehnen, Dennis, Formation, Fouchard, Froeschlé, Gration, Hands, II, Jan
related to Comets · 30
Oort cloud → AU, Based, C/1999 F1, C/2006 P1, C/2010 X1, C/2013 A1, C/2017 K2, C/2017 T2, Catalina, Comet ISON, Comets, Elenin, Halley's Comet, Halley-family, Jupiter-family, Kuiper, McNaught, Neptune's, Oort, Other
related to Stellar perturbations and stellar companion hypotheses · 20
Oort cloud → Besides, During, Earth, For, Gliese, However, In, Milky Way, Muller, Nemesis, Oort, Recent, Richard, Scholz's Star, Solar System, Sun, Sun's Oort, The, This, Thus
has effect · 18
Oort cloud → AU, Cumulatively, Earth's, Galactic Center, In, It, Just, Milky Way, Milky Way's, Moon's, Most, Oort, Solar System, Some, Statistical, Sun, Sun's, The
related to Future exploration · 14
Oort cloud → Announcement, AU, Discovery, In, It, Kepler, Kuiper, L2, Oort, Opportunity, TAU, The, Voyager, Whipple Mission
related to Sedna and similar objects · 11
Oort cloud → Alicanto, AU, GB174, Oort, Other, Sedna, Sedna's, Several, Sun, VN112, VP113
related to Origin · 9
Oort cloud → After, However, Jupiter, Oort, Simulations, Solar System, Sun, The, The Oort
related to Structure and composition · 9
Oort cloud → AU, Hills, Jack, Models, Oort, Sun, The, The Hills, The Oort
related to External links · 4
Oort cloud → Archived, NASA's Solar System Exploration, Oort Cloud Profile, Wayback Machine

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Important terminology

cloud oort comets solar system sun orbits inner outer objects long-period disc scattered galactic gravitational au thought years also formation

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
waterinstance ofthe vast majority of Oort-cloud objects consist of ices0.80text
methaneinstance ofthe vast majority of Oort-cloud objects consist of ices0.80text
ethaneinstance ofthe vast majority of Oort-cloud objects consist of ices0.80text
carbon monoxideinstance ofthe vast majority of Oort-cloud objects consist of ices0.80text
hydrogen cyanideinstance ofthe vast majority of Oort-cloud objects consist of ices0.80text
Oort cloudhas effectMost0.60section
Oort cloudhas effectSun0.60section
Oort cloudhas effectOort0.60section
Oort cloudhas effectMilky Way0.60section
Oort cloudhas effectJust0.60section
Oort cloudhas effectMoon's0.60section
Oort cloudhas effectEarth's0.60section

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