Comet
A comet is an icy small Solar System body that, when passing close to the Sun , warms and begins to release gases, a process called outgassing . This produces a visible atmosphere or coma , and sometimes also a tail . These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times the Earth's diameter, while the tail may stretch one astronomical unit . If sufficiently bright, a comet may be seen from the Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures.
Page Revisions
| Year | Metadata | Sections | Top Words | First Paragraph |
| 2018 |
491507 characters 39 sections 90 paragraphs 60 images 773 internal links 265 external links |
comet 0.613 comets 0.562 coma 0.151 tail 0.140 nucleus 0.127 halley 0.116 bow 0.093 sun 0.080 hyperbolic 0.078 solar 0.075 nuclei 0.063 encke 0.063 oort 0.062 cometary 0.061 cloud 0.060 |
A comet is an icy small Solar System body that, when passing close to the Sun , warms and begins to release gases, a process called outgassing . This produces a visible atmosphere or coma , and sometimes also a tail . These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times the Earth's diameter, while the tail may stretch one astronomical unit . If sufficiently bright, a comet may be seen from the Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures. |
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| 2017 |
486349 characters 38 sections 84 paragraphs 62 images 816 internal links 254 external links |
comet 0.611 comets 0.577 tail 0.139 coma 0.130 nucleus 0.125 halley 0.114 hyperbolic 0.081 sun 0.079 solar 0.073 nuclei 0.066 oort 0.064 cloud 0.062 period 0.060 orbits 0.059 periodic 0.058 |
A comet is an icy small Solar System body that, when passing close to the Sun , warms and begins to release gases, a process called outgassing . This produces a visible atmosphere or coma , and sometimes also a tail . These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times the Earth's diameter, while the tail may stretch one astronomical unit . If sufficiently bright, a comet may be seen from the Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures. |
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| 2016 |
468968 characters 37 sections 81 paragraphs 61 images 803 internal links 231 external links |
comet 0.600 comets 0.582 tail 0.139 coma 0.135 nucleus 0.130 halley 0.107 hyperbolic 0.084 sun 0.082 solar 0.076 nuclei 0.068 oort 0.066 cloud 0.064 period 0.063 orbits 0.062 periodic 0.060 |
A comet is an icy small Solar System body that, when passing close to the Sun , warms and begins to evolve gasses, a process called outgassing . This produces a visible atmosphere or coma , and sometimes also a tail . These phenomena are due to the effects of solar radiation and the solar wind acting upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times the Earth's diameter, while the tail may stretch one astronomical unit . If sufficiently bright, a comet may be seen from the Earth without the aid of a telescope and may subtend an arc of 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures. |
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| 2015 |
463894 characters 38 sections 81 paragraphs 59 images 802 internal links 228 external links |
comet 0.600 comets 0.581 tail 0.150 nucleus 0.130 coma 0.128 halley 0.106 sun 0.086 hyperbolic 0.084 solar 0.076 oort 0.072 nuclei 0.068 orbits 0.062 cloud 0.061 period 0.060 periodic 0.060 |
A comet is an icy small Solar System body that, when passing close to the Sun , heats up and begins to outgas , displaying a visible atmosphere or coma , and sometimes also a tail . These phenomena are due to the effects of solar radiation and the solar wind upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma and tail are much larger and, if sufficiently bright, may be seen from the Earth without the aid of a telescope. Comets have been observed and recorded since ancient times by many cultures. |
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| 2014 |
437571 characters 39 sections 81 paragraphs 60 images 797 internal links 208 external links |
comet 0.604 comets 0.581 tail 0.155 coma 0.128 halley 0.112 nucleus 0.111 hyperbolic 0.092 sun 0.083 solar 0.080 oort 0.072 nuclei 0.068 jupiter 0.063 cloud 0.061 period 0.060 periodic 0.059 |
A comet is an icy small Solar System body that, when passing close to the Sun , heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma and tail are much larger and, if sufficiently bright, may be seen from the Earth without the aid of a telescope. Comets have been observed and recorded since ancient times by many different cultures. |
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| 2013 |
415010 characters 38 sections 79 paragraphs 56 images 782 internal links 191 external links |
comet 0.604 comets 0.580 tail 0.161 coma 0.118 halley 0.116 nucleus 0.115 hyperbolic 0.086 sun 0.084 solar 0.083 nuclei 0.070 oort 0.068 period 0.062 jupiter 0.062 periodic 0.061 orbits 0.060 |
A comet is an icy small Solar System body that, when passing close to the Sun , heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind upon the nucleus of the comet. Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles. The coma and tail are much larger, and if sufficiently bright may be seen from the Earth without the aid of a telescope. Comets have been observed and recorded since ancient times by many different cultures. |
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| 2012 |
354913 characters 31 sections 80 paragraphs 43 images 876 internal links 118 external links |
comets 0.627 comet 0.612 halley 0.118 tail 0.115 hyperbolic 0.087 perihelion 0.075 encke 0.073 solar 0.071 periodic 0.071 coma 0.070 sun 0.063 orbits 0.056 jupiter 0.055 planets 0.054 period 0.050 |
A comet is an icy small Solar System body (SSSB) that, when close enough to the Sun , displays a visible coma (a thin, fuzzy, temporary atmosphere ) and sometimes also a tail . These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet . Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. Comets have been observed since ancient times and have traditionally been considered bad omens . |
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| 2011 |
342320 characters 28 sections 71 paragraphs 44 images 869 internal links 108 external links |
comet 0.646 comets 0.582 tail 0.132 halley 0.112 coma 0.081 encke 0.067 solar 0.065 sun 0.063 perihelion 0.062 periodic 0.059 sungrazers 0.052 hyperbolic 0.050 nucleus 0.049 ion 0.048 jupiter 0.047 |
A comet is an icy small Solar System body that, when close enough to the Sun , displays a visible coma (a thin, fuzzy, temporary atmosphere ) and sometimes also a tail . These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet . Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. Comets have been observed since ancient times and have traditionally been considered bad omens . |
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| 2010 |
292187 characters 27 sections 69 paragraphs 29 images 795 internal links 85 external links |
comet 0.653 comets 0.575 tail 0.133 halley 0.113 coma 0.082 encke 0.067 sun 0.063 perihelion 0.063 solar 0.063 periodic 0.060 sungrazers 0.052 hyperbolic 0.051 nucleus 0.050 jupiter 0.047 biela 0.046 |
A comet is an icy small Solar System body that, when close enough to the Sun , displays a visible coma (a thin, fuzzy, temporary atmosphere ) and sometimes also a tail . These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet . Comet nuclei are themselves loose collections of ice, dust, and small rocky particles, ranging from a few hundred meters to tens of kilometers across. Comets have been observed since ancient times and have historically been considered bad omens . |
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| 2009 |
280286 characters 29 sections 70 paragraphs 24 images 787 internal links 83 external links |
comet 0.663 comets 0.569 halley 0.123 tail 0.120 coma 0.081 perihelion 0.067 encke 0.067 periodic 0.065 sun 0.060 solar 0.059 nucleus 0.055 cometary 0.053 borrelly 0.052 sungrazers 0.052 biela 0.046 |
A comet is a small solar system body bigger than a meteoroid [ citation needed ] that, when close enough to the Sun, exhibits a visible coma (fuzzy "atmosphere"), and sometimes a tail , both because of the effects of solar radiation upon the comet's nucleus . Comet nuclei are themselves loose collections of ice, dust and small rocky particles, ranging from a few hundred metres to tens of kilometres across. |
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| 2008 |
181966 characters 21 sections 69 paragraphs 18 images 426 internal links 68 external links |
comet 0.652 comets 0.577 tail 0.122 halley 0.120 coma 0.082 perihelion 0.068 encke 0.068 sun 0.066 periodic 0.061 solar 0.057 nucleus 0.057 cometary 0.054 borrelly 0.053 sungrazers 0.053 biela 0.047 |
A comet is a small Solar System body that orbits the Sun and, when close enough to the Sun, exhibits a visible coma (atmosphere) or a tail — both primarily from the effects of solar radiation upon the comet's nucleus . Comet nuclei are themselves loose collections of ice, dust and small rocky particles, measuring a few kilometres or tens of kilometres across. |
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| 2007 |
155223 characters 17 sections 63 paragraphs 18 images 410 internal links 50 external links |
comet 0.649 comets 0.569 halley 0.116 coma 0.086 tail 0.083 sun 0.075 perihelion 0.072 nucleus 0.071 periodic 0.069 encke 0.068 borrelly 0.060 cometary 0.055 orbits 0.054 biela 0.053 discovered 0.048 |
A comet is a small body in the Solar System that orbits the Sun and, when close enough to the Sun, exhibits a visible coma (or atmosphere) and/or a tail — both primarily from the effects of solar radiation upon the comet's nucleus . The nucleus itself measures a few kilometres or tens of kilometres across, and is composed mostly of rock, dust and ice. |
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| 2006 |
119311 characters 15 sections 51 paragraphs 11 images 379 internal links 28 external links |
comet 0.627 comets 0.578 halley 0.123 encke 0.098 orbits 0.084 coma 0.079 tail 0.078 periodic 0.078 cometary 0.069 perihelion 0.069 borrelly 0.068 sun 0.067 bopp 0.060 biela 0.060 nucleus 0.056 |
A comet is a small body in the solar system that orbits the Sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail — both primarily from the effects of solar radiation upon the comet's nucleus , which itself is a minor body composed of rock, dust, and ices. Comets' orbits are constantly changing: their origins are in the outer solar system, and they have a propensity to be highly affected (or perturbed ) by relatively close approaches to the major planets. Some are moved into sungrazing orbits that destroy the comets when they near the Sun, while others are thrown out of the solar system forever. |
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| 2005 |
102977 characters 14 sections 46 paragraphs 9 images 380 internal links 23 external links |
comet 0.583 comets 0.533 template 0.374 halley 0.121 encke 0.086 orbits 0.082 periodic 0.069 tail 0.069 coma 0.069 cometary 0.068 perihelion 0.067 borrelly 0.066 sun 0.065 biela 0.059 nucleus 0.055 |
A comet is a small body in the solar system that orbits the sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail — both due primarily to the effects of solar radiation upon the comet's nucleus, which itself is a minor planet composed of rock, dust, and ices. Due to their origins in the outer solar system and their propensity to be highly affected by relatively close approaches to the major planets, comets' orbits are constantly evolving. Some are moved into sungrazing orbits that destroy the comets when they near the sun, while others are thrown out of the solar system forever. |
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| 2004 |
64929 characters 9 sections 21 paragraphs 5 images 331 internal links 7 external links |
comet 0.587 comets 0.519 encke 0.161 halley 0.130 coma 0.111 orbits 0.105 apparitions 0.102 cometary 0.097 sun 0.083 jupiter 0.083 tail 0.083 orbit 0.074 nucleus 0.068 rays 0.067 bessel 0.067 |
A comet is a relatively small astronomical object similar to an asteroid but composed largely of ice. In Earth 's solar system , the orbits of comets may extend past that of Pluto ; of the comets which enter the inner solar system, most have highly elliptical orbits around the Sun. Often described as "dirty snowballs", comets are composed largely of frozen carbon dioxide , methane and water with dust and various mineral aggregates mixed in. |
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| 2003 |
15146 characters 3 sections 16 paragraphs 1 images 88 internal links 3 external links |
comet 0.579 comets 0.385 halley 0.245 giotto 0.164 encke 0.154 nucleus 0.142 tail 0.138 coma 0.124 sun 0.096 borrelly 0.096 spectacularly 0.096 orbits 0.094 reflects 0.089 solar 0.076 naked 0.075 |
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| 2002 |
12136 characters 2 sections 13 paragraphs 1 images 67 internal links 0 external links |
comet 0.577 comets 0.346 halley 0.262 giotto 0.176 encke 0.165 nucleus 0.152 tail 0.148 coma 0.133 sun 0.126 borrelly 0.103 spectacularly 0.103 reflects 0.095 naked 0.080 dust 0.078 solar 0.073 |
A comet is a small body from the outer reaches of the solar system similar to an asteroid but composed of ice. Often described as "dirty snowballs," they are composed largely of carbon dioxide ice, methane ice, and water ice with a mixture of dust and small stony aggregates mixed in. Comets are thought to be small pieces of debris left over from the formation of the solar system , representing a sample of the original composition of the nebula that condensed to form the Sun and all of its planets . |
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| 2001 |
11710 characters 0 sections 24 paragraphs 0 images 67 internal links 0 external links |
comet 0.588 comets 0.366 halley 0.184 encke 0.174 tail 0.156 coma 0.141 sun 0.133 nucleus 0.129 borrelly 0.108 spectacularly 0.108 reflects 0.101 giotto 0.093 naked 0.085 solar 0.077 falls 0.075 |
A comet is a small body from the outer reaches of the solar system similar to an asteroid but composed of ice. Often described as "dirty snowballs," they are composed largely of carbon dioxide ice, methane ice, and water ice with a mixture of dust and small stony aggregates mixed in. Comets are thought to be small pieces of debris left over from the formation of the solar system , representing a sample of the original composition of the nebula that condensed to form the Sun and all of its planets . |