Theia (planet)
Theia ( / ˈ θ iː ə / ) is a hypothesized ancient planet in the early Solar System that, according to the ' giant impact hypothesis ', collided with Gaia (the early Earth ) around 4.5 billion years ago. [1] [2] According to the hypothesis , Theia was an Earth trojan about the size of Mars , with a diameter of about 6,102 km (3,792 miles). Geologist Edward Young of the University of California, Los Angeles , drawing on an analysis of rocks collected by Apollo missions 12 , 15 , and 17 , proposes that Theia collided head-on with Earth, [3] in contrast to the previous theory that suggested a glancing impact. Models of the impact indicate that Theia's debris gathered around Earth to form the early Moon .
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| 2018 |
84944 characters 6 sections 12 paragraphs 5 images 389 internal links 23 external links |
theia 0.886 hypothesis 0.123 earth 0.116 proto 0.105 glancing 0.103 moon 0.096 collision 0.092 collided 0.069 head 0.069 l5 0.068 l4 0.067 orpheus 0.061 ˈθiːə 0.061 venus 0.061 struck 0.060 |
Theia ( / ˈ θ iː ə / ) is a hypothesized ancient planet in the early Solar System that, according to the ' giant impact hypothesis ', collided with Gaia (the early Earth ) around 4.5 billion years ago. [1] [2] According to the hypothesis , Theia was an Earth trojan about the size of Mars , with a diameter of about 6,102 km (3,792 miles). Geologist Edward Young of the University of California, Los Angeles , drawing on an analysis of rocks collected by Apollo missions 12 , 15 , and 17 , proposes that Theia collided head-on with Earth, [3] in contrast to the previous theory that suggested a glancing impact. Models of the impact indicate that Theia's debris gathered around Earth to form the early Moon . |
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| 2017 |
87625 characters 6 sections 11 paragraphs 5 images 393 internal links 28 external links |
theia 0.873 hypothesis 0.128 earth 0.115 proto 0.109 glancing 0.108 moon 0.100 collision 0.096 collided 0.072 head 0.072 l5 0.070 l4 0.070 orpheus 0.064 venus 0.063 merged 0.063 orbited 0.059 |
Theia ( / θ iː ə / ) is a hypothesized ancient planetary-mass object in the early Solar System that, according to the giant impact hypothesis , collided with another planetary-mass object, Gaia (the early Earth ) around 4.5 billion years ago. [1] [2] According to the hypothesis , Theia was an Earth trojan about the size of Mars , with diameter of about 6,000 km (3,700 miles). Geologist Edward Young of the University of California, Los Angeles , drawing on an analysis of rocks collected by Apollo missions 12 , 15 , and 17 , suggests Theia collided head-on with Earth, [3] in contrast to the previous theory that suggested a glancing impact. Models of the impact propose that Theia's debris gathered around Earth to form the early Moon . |
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| 2016 |
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theia 0.876 hypothesis 0.146 glancing 0.123 moon 0.114 earth 0.109 proto 0.083 collided 0.082 collision 0.082 head 0.081 orpheus 0.073 merged 0.071 local 0.064 pieces 0.062 titaness 0.058 echoes 0.056 |
Theia ( / θ iː ə / ) is a hypothesized ancient planetary-mass object in the early Solar System that, according to the giant impact hypothesis , collided with the early Earth around 4.31 billion years ago. [1] According to the hypothesis , Theia was an Earth trojan about the size of Mars , with diameter of about 6,000 km (3,700 miles). Geologist Edward Young of the University of California, Los Angeles , drawing on an analysis of rocks collected by Apollo missions 12 , 15 , and 17 , suggests that Theia collided head-on with Earth, [2] in contrast to the previous theory that suggested a glancing impact. Models of the impact propose that Theia's debris gathered around Earth to form the early Moon . Some scientists think that the material thrown into orbit originally formed two moons [3] [4] that later merged to form the single moon we know today. The Theia hypothesis also explains why Earth's core is larger than would be expected for a body its size: according to the hypothesis, Theia's core and mantle mixed with Earth's. [5] |
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| 2015 |
49423 characters 5 sections 5 paragraphs 4 images 211 internal links 13 external links |
theia 0.849 moon 0.178 earth 0.143 proto 0.129 glancing 0.127 collision 0.113 hypothesis 0.101 l5 0.083 l4 0.082 bya 0.075 orpheus 0.075 venus 0.075 struck 0.074 merged 0.074 orbited 0.069 |
Theia / θ iː ə / is a hypothesized ancient planetary-mass object in the early Solar System that according to the giant impact hypothesis collided with the Early Earth around 4.533 billion years ago ( BYa ). [1] According to the hypothesis, Theia was an Earth trojan about the size of Mars , with diameter approx. 6000km; if the impact were not glancing, it could have destroyed Earth. Models of the impact propose that Theia's debris gathered together around Earth to form what was the early Moon . After the debris from the collision flew into space, some scientists think that it originally formed two moons [2] [3] which later merged to form the single Moon we know today. However, the two-moon hypothesis is not necessary to explain the difference in the faces of the near and far sides of the Moon. [ citation needed ] The theory also explains the reason that Earth's core is larger than it would be for a body its size, since according to the theory, Theia's core and mantle mixed with Earth's. [4] |
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| 2014 |
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theia 0.830 moon 0.218 collision 0.149 earth 0.143 glancing 0.134 theory 0.130 collided 0.090 blow 0.090 l5 0.088 l4 0.087 stuck 0.085 bya 0.079 venus 0.079 struck 0.078 merged 0.078 |
Template:Incomplete Theia / θ iː ə / is a hypothesized ancient planet in the early Solar System that according to the giant impact hypothesis collided with the Early Earth around 4.533 billion years ago ( BYa ). [1] Theia was about the size of Mars , and, had it not collided with Earth with a glancing blow, it could have destroyed Earth. In the end, Theia's debris gathered together around Earth to form what was the early Moon . After the debris from the collision flew into space, some scientists think that it originally formed two moons [2] [3] which later merged to form the single Moon we know today. Others, [3] however, believe that the two-moon hypothesis is not necessary to explain the difference in the faces of the near and far sides of the Moon. |
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Theia is the hypothetical planet that, according to the giant impact hypothesis of the Moon 's formation, collided with Earth over 4.5 billion years ago. It was named after Theia of Greek mythology , a Titan that gave birth to the Moon goddess Selene ; however, it has also been known as Orpheus and Hephaestus . |
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Theia ( THAY-uh ) is the hypothetical planet that, according to the giant impact theory of the Moon 's formation, collided with Earth over four billion years ago. This impact at a glancing angle would have destroyed Theia, its iron core burying itself within the primordial Earth. Volatiles in its mantle and surface would become massive quantities of ejecta thrown into orbit around Earth. From that material the Moon coalesced in a matter of no more than a century, possibly within less than a month. Earth would have gained significant amounts of angular momentum from such a collision, as well as an increase in total mass to its current level. |
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| 2004 |
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Theia is the name of a hypothetical planet that, according to one theory of the Moon 's formation, collided with the Earth over four billion years ago. This impact destroyed Theia and threw massive quantities of ejecta into orbit around Earth, from which the Moon coalesced in a matter of months or days. Earth also gained significant amounts of angular momentum from the collision, as well as increasing its total mass to its modern level. See Giant impact theory . |