Sub-Earth
A sub-Earth is a planet "substantially less massive" than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earth exoplanets are among the most difficult type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . The smallest known is WD 1145+017 b with a size of 0.15 Earth radii, or somewhat smaller than Pluto . However, WD 1145+017 b is a dwarf planet as it orbits within a cloud of dust and gas. [2]
Page Revisions
| Year | Metadata | Sections | Top Words | First Paragraph |
| 2018 |
86749 characters 1 sections 3 paragraphs 4 images 580 internal links 6 external links |
earths 0.433 1145 0.306 rⴲ 0.306 wd 0.306 kepler 0.267 017 0.259 exoplanets 0.184 atmospheres 0.160 1rⴲ 0.153 sizes 0.124 b1257 0.123 smaller 0.119 psr 0.118 realm 0.114 millisecond 0.114 |
A sub-Earth is a planet "substantially less massive" than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earth exoplanets are among the most difficult type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . The smallest known is WD 1145+017 b with a size of 0.15 Earth radii, or somewhat smaller than Pluto . However, WD 1145+017 b is a dwarf planet as it orbits within a cloud of dust and gas. [2] |
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| 2017 |
85431 characters 1 sections 3 paragraphs 4 images 580 internal links 5 external links |
earths 0.433 1145 0.306 rⴲ 0.306 wd 0.306 kepler 0.267 017 0.259 exoplanets 0.184 atmospheres 0.160 1rⴲ 0.153 sizes 0.124 b1257 0.123 smaller 0.119 psr 0.118 realm 0.114 millisecond 0.114 |
A sub-Earth is a planet "substantially less massive" than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earth exoplanets are among the most difficult type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . The smallest known is WD 1145+017 b with a size of 0.15 Earth radii, or somewhat smaller than Pluto . However, WD 1145+017 b is a dwarf planet as it orbits within a cloud of dust and gas. [2] |
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| 2016 |
83918 characters 1 sections 3 paragraphs 4 images 576 internal links 3 external links |
earths 0.511 rⴲ 0.362 kepler 0.315 exoplanets 0.217 atmospheres 0.188 1rⴲ 0.181 sizes 0.147 b1257 0.146 psr 0.140 realm 0.135 millisecond 0.135 pulsar 0.135 weakest 0.128 star 0.108 smaller 0.105 |
A sub-Earth is a planet "substantially less massive" than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earth exoplanets are among the most difficult type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . |
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| 2015 |
82469 characters 1 sections 3 paragraphs 3 images 575 internal links 3 external links |
earths 0.511 rⴲ 0.362 kepler 0.315 exoplanets 0.217 atmospheres 0.188 1rⴲ 0.181 sizes 0.147 b1257 0.146 psr 0.140 realm 0.135 millisecond 0.135 pulsar 0.135 weakest 0.128 star 0.108 smaller 0.105 |
A sub-Earth is a planet "substantially less massive" than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earth exoplanets are among the most difficult type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . |
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| 2014 |
82626 characters 1 sections 2 paragraphs 3 images 576 internal links 3 external links |
earths 0.509 rⴲ 0.360 kepler 0.314 exoplanets 0.216 atmospheres 0.187 1rⴲ 0.180 sizes 0.146 b1257 0.145 psr 0.139 realm 0.135 millisecond 0.135 pulsar 0.135 weakest 0.127 star 0.107 smaller 0.105 |
Sub-Earth is a classification of planets "substantially less massive" than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earth exoplanets are the most difficult planet type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . Kepler opened the realm of sub-Earths by discovering them. On January 10, 2012 Kepler discovered the first three sub-Earths around an ordinary star Kepler-42 . As of June 2014, Kepler has 45 confirmed planets that are smaller than Earth with 17 of them being smaller than 0.8 R ⴲ . In addition, there are over 310 planet candidates with the estimated radius of <1R ⴲ with 135 of them being smaller than 0.8 R ⴲ . [1] [2] |
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| 2013 |
82109 characters 1 sections 2 paragraphs 3 images 576 internal links 2 external links |
earths 0.656 kepler 0.323 exoplanets 0.223 atmospheres 0.193 sizes 0.150 b1257 0.149 psr 0.143 realm 0.139 millisecond 0.139 pulsar 0.139 weakest 0.131 star 0.111 wear 0.107 discovering 0.104 ordinary 0.100 |
Sub-Earth (also known as subterrestrial planet ( STEP )) is a classification of planets less massive than Earth and Venus . [1] In the Solar System , this category includes Mercury and Mars . Sub-Earths are the most difficult planet type to detect because their small sizes and masses produce the weakest signal. Despite the difficulty, one of the first exoplanets found was a sub-Earth around a millisecond pulsar PSR B1257+12 . Kepler opened the realm of sub-Earths by discovering them. On January 10, 2012 Kepler discovered the first three sub-Earths around an ordinary star Kepler-42 . As of April 2013, Kepler has confirmed seven sub-Earth exoplanets as well as 36 candidates. [1] |