Oort cloud
The
Oort cloud
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ɔːr
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Page Revisions
| Year | Metadata | Sections | Top Words | First Paragraph |
| 2018 |
249990 characters 11 sections 29 paragraphs 22 images 717 internal links 113 external links |
oort 0.643 cloud 0.431 comets 0.381 au 0.117 orbits 0.104 disc 0.104 tide 0.104 galactic 0.099 scattered 0.099 sun 0.095 outer 0.091 inner 0.084 ly 0.083 objects 0.076 period 0.069 |
The
Oort cloud
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ɔːr
t
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| 2017 |
246710 characters 11 sections 28 paragraphs 22 images 720 internal links 106 external links |
oort 0.642 cloud 0.431 comets 0.379 au 0.118 orbits 0.106 disc 0.106 tide 0.105 galactic 0.101 scattered 0.100 sun 0.096 outer 0.092 inner 0.085 ly 0.084 objects 0.077 period 0.070 |
The
Oort cloud
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/
ɔːr
t
,
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| 2016 |
246693 characters 12 sections 28 paragraphs 21 images 713 internal links 101 external links |
6. Stellar perturbations and stellar companion hypotheses |
oort 0.641 cloud 0.430 comets 0.372 au 0.116 galactic 0.108 sun 0.106 disc 0.104 tide 0.104 orbits 0.099 scattered 0.099 outer 0.091 inner 0.084 ly 0.083 objects 0.081 comet 0.078 |
The Oort cloud ( / ˈ ɔːr t / or / ˈ ʊər t / , [1] named after the Dutch astronomer Jan Oort ), sometimes called the Öpik–Oort cloud , [2] is a theoretical cloud of predominantly icy planetesimals believed to surround the Sun to as far as somewhere between 50,000 and 200,000 AU (0.8 and 3.2 ly). [note 1] [3] It is divided into two regions: a disc-shaped inner Oort cloud (or Hills cloud ) and a spherical outer Oort cloud. Both regions lie beyond the heliosphere and in interstellar space . [3] [4] The Kuiper belt and the scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth as far from the Sun as the Oort cloud. |
| 2015 |
247746 characters 11 sections 27 paragraphs 21 images 714 internal links 104 external links |
6. Stellar perturbations and stellar companion hypotheses |
oort 0.647 cloud 0.431 comets 0.364 au 0.121 sun 0.108 galactic 0.106 disc 0.102 tide 0.101 orbits 0.097 scattered 0.097 outer 0.094 objects 0.084 inner 0.082 comet 0.076 solar 0.071 |
The Oort cloud ( / ˈ ɔːr t / or / ˈ ʊər t / [1] ) or Öpik–Oort cloud , [2] named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik , is a theoretical cloud of predominantly icy planetesimals believed to surround the Sun beyond the other circumstellar discs . [3] It is divided into two regions: a disc-shaped inner Oort cloud (or Hills cloud ) of 2,000 – 20,000 AU and a spherical outer Oort cloud of 20,000 – 50,000 AU. The outer Oort Cloud extends into interstellar space, at almost half of the distance to Proxima Centauri , the nearest star to the Sun. [4] The Kuiper belt and the scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance. [5] Objects in the Oort cloud are largely composed of ices , such as water , ammonia , and methane . |
| 2014 |
231935 characters 11 sections 26 paragraphs 19 images 703 internal links 87 external links |
6. Star perturbations and stellar companion hypotheses |
oort 0.629 cloud 0.426 comets 0.390 sun 0.111 disc 0.109 tide 0.108 au 0.107 orbits 0.104 galactic 0.104 scattered 0.103 outer 0.090 ly 0.087 comet 0.082 inner 0.082 objects 0.080 |
The Oort cloud ( / ˈ ɔːr t / or / ˈ ʊər t / [1] ) or Öpik–Oort cloud , [2] named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik , is a spherical cloud of predominantly icy planetesimals believed to surround the Sun at a distance of up to 50,000 AU (0.8 ly ). [3] This places the cloud a quarter of the distance to Proxima Centauri , the nearest star to the Sun. The Kuiper belt and the scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance. [4] |
| 2013 |
252043 characters 12 sections 28 paragraphs 19 images 719 internal links 103 external links |
6. Star perturbations and stellar companion hypotheses |
oort 0.619 cloud 0.428 comets 0.378 disc 0.130 scattered 0.123 orbits 0.118 galactic 0.117 tide 0.103 sun 0.102 au 0.102 objects 0.091 inner 0.090 outer 0.085 comet 0.078 ly 0.069 |
The Oort cloud / ˈ ɔːr t / [1] (named after the Dutch astronomer Jan Oort ), or Öpik–Oort cloud , [2] is a hypothesized spherical cloud of predominantly icy planetesimals that may lie roughly 50,000 AU , or nearly a light-year , from the Sun . [3] This places the cloud at nearly a quarter of the distance to Proxima Centauri , the nearest star to the Sun. The Kuiper belt and the scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth of the Oort cloud's distance. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance. [4] |
| 2012 |
195531 characters 11 sections 31 paragraphs 15 images 420 internal links 99 external links |
6. Star perturbations and stellar companion hypotheses |
oort 0.617 cloud 0.431 comets 0.386 disc 0.127 scattered 0.121 orbits 0.116 galactic 0.114 sun 0.108 tide 0.101 au 0.100 objects 0.089 inner 0.088 outer 0.084 stars 0.081 comet 0.076 |
The Oort cloud / ˈ ɔːr t / , [1] or the Öpik–Oort cloud [2] (named after Jan Oort ), is a hypothesized spherical cloud of comets which may lie roughly 50,000 AU , or nearly a light-year , from the Sun . [3] This places the cloud at nearly a quarter of the distance to Proxima Centauri , the nearest star to the Sun. The Kuiper belt and the scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth of the Oort cloud's distance. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance. [4] |
| 2011 |
192783 characters 11 sections 28 paragraphs 15 images 417 internal links 98 external links |
6. Star perturbations and stellar companion hypotheses |
oort 0.603 cloud 0.427 comets 0.403 disc 0.133 scattered 0.126 orbits 0.121 galactic 0.119 tide 0.106 au 0.104 sun 0.097 inner 0.092 outer 0.087 objects 0.083 comet 0.080 ly 0.071 |
The Oort cloud / ˈ ɔːr t / , [1] or the Öpik–Oort cloud [2] ( Finnish: [ˈøpik.ˈoːrt] ), is a hypothesized spherical cloud of comets which may lie roughly 50,000 AU , or nearly a light-year , from the Sun . [a] [3] This places the cloud at nearly a quarter of the distance to Proxima Centauri , the nearest star to the Sun. The Kuiper belt and scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth of the Oort cloud's distance. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance. [4] |
| 2010 |
183282 characters 10 sections 27 paragraphs 15 images 387 internal links 76 external links |
oort 0.594 cloud 0.424 comets 0.411 disc 0.136 scattered 0.129 orbits 0.124 galactic 0.122 tide 0.108 au 0.106 sun 0.095 inner 0.094 outer 0.089 comet 0.081 objects 0.079 ly 0.072 |
The Oort cloud ( pronounced /ˈɔrt/ (deprecated template) ort, alternatively the Öpik-Oort cloud IPA: [ˈøpik] ) is a hypothesized spherical cloud of comets which may lie roughly 50,000 AU , or nearly a light-year , from the Sun . [1] This places the cloud at nearly a quarter of the distance to Proxima Centauri , the nearest star to the Sun. The Kuiper belt and scattered disc , the other two reservoirs of trans-Neptunian objects , are less than one thousandth the Oort cloud's distance. The outer extent of the Oort cloud defines the gravitational boundary of our Solar System . [2] |
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| 2009 |
178549 characters 10 sections 26 paragraphs 14 images 380 internal links 68 external links |
oort 0.600 cloud 0.430 comets 0.407 disc 0.139 scattered 0.132 orbits 0.128 galactic 0.126 tide 0.111 au 0.109 inner 0.096 outer 0.092 sun 0.085 comet 0.084 objects 0.082 gravitational 0.069 |
The Oort Cloud ( pronounced /ˈɔrt/ (deprecated template) ort, alternatively the Öpik-Oort Cloud IPA: [ˈøpik] ) is a hypothesized spherical cloud of comets which may lie roughly 50,000 AU , or nearly a light-year , from the Sun . [1] This places the cloud at nearly a quarter of the distance to Proxima Centauri , the nearest extrasolar star . The Kuiper belt and scattered disc , the other two known reservoirs of trans-Neptunian objects , are less than one thousandth the Oort cloud's distance. The outer extent of the Oort cloud defines the gravitational boundary of our Solar System . [2] |
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| 2008 |
174846 characters 10 sections 24 paragraphs 11 images 379 internal links 69 external links |
oort 0.601 cloud 0.429 comets 0.408 disc 0.146 scattered 0.139 orbits 0.131 galactic 0.123 tide 0.109 au 0.107 inner 0.095 sun 0.091 outer 0.090 comet 0.090 objects 0.075 period 0.069 |
The Oort cloud ( pronounced /ˈɔrt/ (deprecated template) ort, alternatively the Öpik-Oort Cloud IPA: [ˈøpik] ) is a hypothetical spherical cloud of comets which may lie roughly 50 000 AU , or nearly a light-year , from the Sun . [1] The distance places the cloud at nearly a quarter of the distance to Proxima Centauri , the nearest star to the Sun. The Kuiper belt and scattered disc , the other two known reservoirs of trans-Neptunian objects , are less than one thousandth the Oort cloud's distance. The outer extent of the Oort cloud defines the gravitational boundary of our Solar System [2] . |
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| 2007 |
79176 characters 8 sections 13 paragraphs 4 images 241 internal links 25 external links |
oort 0.654 cloud 0.483 comets 0.264 inner 0.133 stars 0.123 outer 0.112 orbits 0.099 spherical 0.088 sun 0.087 au 0.081 solar 0.080 objects 0.079 öpik 0.078 template 0.073 nemesis 0.070 |
The Oort cloud ( Template:PronEng ort, alternatively the Öpik-Oort Cloud ( IPA: [ˈøpɪk] : that is, as [ˈepɪk] with a rounded [e])), is a postulated spherical cloud of comets situated about 50,000 AU [1] from the Sun . This is approximately 1000 times the distance from the Sun to Pluto or nearly a light year . The outer extent of the Oort cloud places the boundary of our Solar System at nearly a quarter of the distance to Proxima Centauri , the nearest star to the Sun. |
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| 2006 |
57932 characters 5 sections 15 paragraphs 5 images 246 internal links 7 external links |
oort 0.626 cloud 0.414 comets 0.339 sedna 0.129 inner 0.128 au 0.117 sun 0.116 90377 0.114 öpik 0.094 cr105 0.084 nemesis 0.084 closer 0.080 orbits 0.080 stars 0.074 solar 0.074 |
The Oort cloud , alternatively termed the Öpik-Oort Cloud , is a postulated spherical cloud of comets situated about 50,000 to 100,000 AU from the Sun . This is approximately 2000 times the distance from the Sun to Pluto or roughly one light year , almost a quarter of the distance from the Sun to Proxima Centauri , the star nearest the Sun. |
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| 2005 |
46392 characters 3 sections 9 paragraphs 5 images 231 internal links 3 external links |
oort 0.628 cloud 0.420 comets 0.258 sun 0.152 öpik 0.136 closer 0.116 inner 0.116 stars 0.107 neighbors 0.098 destroyed 0.096 orbits 0.096 sedna 0.093 hendrick 0.075 928 0.075 transneptunian 0.075 |
The Oort cloud (sometimes called the Öpik-Oort Cloud ) is a postulated spherical cloud of comets situated about 50,000 to 100,000 AU from the Sun . This is approximately 1000 times the distance from the Sun to Pluto or roughly one light year , almost a quarter of the distance from the Sun to Proxima Centauri , the star nearest the Sun. |
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| 2004 |
40308 characters 1 sections 8 paragraphs 3 images 219 internal links 2 external links |
oort 0.605 cloud 0.413 comets 0.253 sun 0.167 öpik 0.150 closer 0.128 inner 0.127 stars 0.118 neighbors 0.108 destroyed 0.105 orbits 0.105 sedna 0.103 hendrick 0.083 solar 0.082 giants 0.080 |
The Oort cloud (sometimes called the Öpik-Oort Cloud ) is a postulated spherical cloud of comets situated about 50,000 to 100,000 AU from the Sun . This is approximately 1000 times the distance from the Sun to Pluto or roughly one light year , almost a quarter of the distance from the Sun to Proxima Centauri , the star nearest the Sun. |
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| 2003 |
4279 characters 0 sections 5 paragraphs 0 images 28 internal links 0 external links |
oort 0.510 comets 0.426 cloud 0.328 öpik 0.252 destroyed 0.178 solar 0.139 inner 0.129 situated 0.123 estonian 0.118 sun 0.113 clouds 0.108 contradiction 0.105 comet 0.102 stars 0.099 intrusion 0.099 |
The Oort cloud (sometimes called the Öpik-Oort Cloud ) is a postulated cloud of comets situated about 50,000 to 100,000 AU from the sun (approximately 1000 times the distance from the Sun to Pluto). Although no direct observations have been made of such a cloud, it is believed to be the source of most or all comets entering the inner solar system (some short-period comets may come from the Kuiper belt ), based on observations of the orbits of comets. |
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| 2002 |
2959 characters 0 sections 3 paragraphs 0 images 14 internal links 0 external links |
oort 0.621 comets 0.398 cloud 0.306 destroyed 0.189 inner 0.137 belt 0.131 kuiper 0.116 clouds 0.115 contradiction 0.111 comet 0.108 stars 0.106 solar 0.106 intrusion 0.105 continual 0.105 jan 0.099 |
The Oort cloud is a postulated cloud of comets situated about 50,000 to 100,000 AU from the sun . Although no direct observations have been made of such a cloud, it is believed to be the source of most or all comets entering the inner solar system (some short-period comets may come from the Kuiper Belt ), based on observations of the orbits of comets. The Oort cloud was proposed in 1950 by Dutch astronomer Jan Oort to explain an apparent contradiction: comets are destroyed by several passes through the inner solar system , yet if the comets we observe had existed since the origin of the solar system, all would have been destroyed by now. According to the theory, the Oort cloud contains millions of comet nuclei, which are stable because the sun's radiation is weak at their distance. The cloud provides a continual supply of new comets, replacing those that are destroyed. |
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| 2001 |
2793 characters 0 sections 3 paragraphs 0 images 13 internal links 0 external links |
oort 0.656 comets 0.360 cloud 0.277 destroyed 0.200 belt 0.138 kuiper 0.122 clouds 0.121 comet 0.114 stars 0.112 solar 0.112 intrusion 0.111 continual 0.111 jan 0.104 overlap 0.097 inner 0.097 |
The Oort cloud is a cloud of comets situated about 50,000 to 100,000 astronomical units from the sun . It is believed to be the source of most or all comets entering the solar system (at least some short-period comets may come from the Kuiper Belt ). The Oort cloud was proposed in 1950 by Dutch astronomer Jan Oort to explain an apparent contradition: comets are destroyed by several passes through the inner solar system , yet if the comets we observe had existed since the origin of the solar system, all would have been destroyed by now. According to the theory, the Oort cloud contains millions of comet nuclei, which are stable because the sun's radiation is weak at their distance. The cloud provides a continual supply of new comets, replacing those that are destroyed. |