Planetpedia is a FANDOM Lifestyle Community. Much of Earth's water originated from Theia, which was an ice encrusted planet. Theia (pronunciation: / θ iː ə /) adalah objek dengan massa planet yang diduga pernah ada pada masa awal Tata Surya, dan menurut hipotesis tubrukan besar objek ini bertubrukan dengan objek bermassa planet lainnya, yaitu Gaia (Bumi purba) sekitar 4,5 miliar tahun yang lalu.

Un nume alternativ, Orfeu, este de asemenea folosit.[5]. Principalul motiv pentru care majoritatea oamenilor de știință și a specialiștilor adoptă scenariul Theia este că, în comparație cu lunile diferitelor planete ale Sistemului Solar, cea a Terrei este mult mai mare decât media și distanța față de Pământ este mai mică decât cea dintre celelalte planete și lunile lor. The Moon's oddly different sides", Last edited on 25 September 2020, at 12:05, "UCLA study shows the moon is older than previously thought", "The Theia Hypothesis: New Evidence Emerges that Earth and Moon Were Once the Same", "Selene | Origin and meaning of selene by Online Etymology Dictionary", "STEREO Hunts for Remains of an Ancient Planet near Earth", "New Evidence For 4.5 Billion Year Old Impact Formed Our Moon", "Moon was produced by a head-on collision between Earth and a forming planet", https://en.wikipedia.org/w/index.php?title=Theia_(planet)&oldid=980244809, Creative Commons Attribution-ShareAlike License, The Earth and Moon formed at the same time when the, This page was last edited on 25 September 2020, at 12:05. It is an ideal place for playing online free puzzles. Ultima editare a paginii a fost efectuată la 22 aprilie 2019, ora 20:06. THEIA and its aerospace partners are building the world’s first satellite constellation designed specifically to digitize the entire earth continuously, in visible and non-visible wavelengths, with the resolution and quality necessary to fuel Decision-Grade® analytics for physical world activities and businesses, including the major physical industries that underpin nation-state economies. "Faceoff! The name for Theia came from the Greek titaness, Theia. Additional evidence published in 2019 suggests that Theia might have formed in the outer Solar System rather than the inner Solar System, and that much of Earth's water originated on Theia.[5]. Theia was named for the titaness Theia, who in Greek mythology was the mother of Selene, the goddess of the moon,[6] which parallels the planet Theia's collision with the early Earth that is theorized to have created the Moon. According to the Giant Impact Hypothesis Theia orbited the Sun at around the orbit of Earth at the L4 or L5 Lagrangian points,Template:Fact but was perturbed by Jupiter and Venus into a collision with the proto-Earth.Template:Fact Theia struck Earth with a glancing blow[6] and ejected many pieces of both the proto-Earth and Theia.

[citation needed]. Prin urmare, este puțin probabil ca acesta să fie un corp ceresc capturat ca cele mai multe dintre lunile celorlalte planete. It grew to a Mars-like size and, through gravitational perturbation from Venus, was moved around and eventually set on a collision course with Earth.[5]. [2][3], In addition to explaining Earth's large moon, the Theia hypothesis can also explain why Earth's core is larger than would be expected for a body its size; Theia's core and mantle mixed with Earth's. Conform studiului A primordial origin for the compositional similarity between the Earth and the Moon[3], Theia ar fi avut o compoziție similară Pământului, fapt ce ar explica asemănările dintre Pământ și Lună. că un singur corp s-a împărțit în Pământ și Lună; că Luna a fost capturată de gravitația Pământului (așa cum au fost capturate majoritatea sateliților mai mici ale celorlalte planete); că Pământul și Luna s-au format în același timp când a apărut. Computer simulations suggest that Theia was traveling no faster than 4 km/s (8,900 mph) when it struck Earth at an estimated 45 degree angle.

These pieces either formed one body that became the Moon, or formed two moons that eventually merged to form the Moon. THEIA is building the TSN – the Theia Satellite Network – to enable digitizing the entire earth in real time, with simultaneous granularity and scale that is unprecedented, providing the data to solve humankind’s most pressing problems. This story is known as the giant-impact hypothesis; the Mars-sized object is called Theia; and now, for the first time, scientists believe they've found traces of Theia in the Moon.. In that case, it would have grown, potentially to a size comparable to Mars.

From the beginning of modern astronomy, there have been at least four hypotheses for the proposed origin of the Moon: that a single body somehow divided into Earth and Moon; that the Moon was captured by Earth's gravity (as most of the outer planets' smaller moons were captured); that Earth and Moon formed at the same time when the protoplanetary disk accreted; and the Theia scenario. Theia nu a făcut-o, deoarece proto-Pământul era pe o orbită apropiată, iar Pământul este o planetă pentru că a eliminat-o pe Theia (definiția nu permite existența mai multor planete pe aceeași orbită). Real Time. In mythology, Theia was the mother of Selene, the goddess of the moon, just as the planet Theia's collision with the early Earth is theorized to have created the Moon. Theia Template:IPAc-en 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 4.4 billion years ago (BYa) and one of the main characters in How the Universe Works. [8] Theia / ˈ 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 4.5 billion years ago. Theia diduga merupakan objek Troya Bumi yang seukuran Mars dengan diameter 6.102 km. Exploded, blown to bits, and destroyed by The Earth (revived), Theia Template:IPAc-en 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 4.4 billion years ago (BYa) and one of the main characters in How the Universe Works. În sensul strict al definiției actuale a Uniunii Astronomice Internaționale, Theia nu este o planetă: o planetă trebuie să-și fi eliminat "rivalii" de pe o orbită apropiată. The giant-impact hypothesis has been the favoured model for explaining the formation of the Moon for years. View Theia's puzzles on Jigsaw Planet. Theia was eventually perturbed away from that relationship by the gravitational influence of Jupiter and/or Venus, resulting in a collision between Theia and Earth. Theia is thought to have orbited in the L4 or L5 configuration presented by the Earth–Sun system, where it would tend to remain. [7] In modern Greek, Theia also means "aunt". De la începutul astronomiei moderne, au existat cel puțin patru ipoteze pentru originea Lunii: Probele de piatră lunară recuperate de astronauții Apollo s-au dovedit a fi foarte asemănătoare cu compoziția crustei Pământului, și astfel au fost probabil îndepărtate de pe Pământ într-un eveniment violent.[6][7][8]. However, the two-moon hypothesis is not necessary to explain the difference in the faces of the near and far sides of the Moon. Münker, C., Pfänder, J.A., Weyer, S., Büchl, A., Kleine, T., Mezger, K. Robin M. Canup, Southwest Research Institut ("Icarus", 168). [2] Had Theia struck the proto-Earth head-on, it would have led to the destruction of both planets, creating a short-lived asteroid belt between the orbits of Venus and Mars. Originally, the hypothesis supposed that Theia had struck Earth with a glancing blow[9] and ejected many pieces of both the proto-Earth and Theia, those pieces either forming one body that became the Moon or forming two moons that eventually merged to form the Moon. Models of the impact propose that Theia's debris gathered together around Earth to form what was the early Moon. From the beginning of modern astronomy, there have been at least four hypotheses for the origin of the Moon: The lunar rock samples retrieved by Apollo astronauts were found to be very similar in composition to Earth's crust, and so were likely removed from Earth in some violent event.[12][15][16]. Theia (sau uneori Orfeu) este un obiect ipotetic al Sistemului Solar, presupus că ar fi existat în trecut.Potrivit ipotezei impactului gigantic, formarea Lunii este datorată coliziunii Pământului (mai bine-zis proto-Pământului) cu un obiect de talia planetei Marte, Theia fiind impactorul.Impactul ar fi avut loc cu aproximativ 4,5 miliarde de ani în urmă. Theia (sau uneori Orfeu) este un obiect ipotetic al Sistemului Solar, presupus că ar fi existat în trecut. [4], Theia was thought to have orbited in the L4 or L5 spots in the Earth's orbit. Real World. In contrast, evidence published in January 2016 suggests that the impact was indeed a head-on collision and that Theia's remains can be found in both the Earth and the Moon.[12][13][14]. https://planet.fandom.com/wiki/Theia?oldid=12398. 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. The lunar rock samples retrieved by Apollo astronauts were found to be very similar in composition to Earth's crust, and so were likely removed from Earth in some violent event.[7][8]. Theia /ˈθiːə/ (Θεία in Greek) or Orpheus (Ορφεύς) /ˈɔːrfiːəs, ˈɔːrfjuːs/ [1]) is a hypothesized ancient planet in the early Solar System that, according to the giant-impact hypothesis, collided with the early Earth around 4.5 billion years ago, with the resulting debris gathering to form the Moon. [1] According to the hypothesis, Theia was an Earth trojan about the size of Mars; if the impact were not glancing, it could have destroyed Earth. Theia collided with Gaia -- the ancient Earth -- some 4.5 billion years ago and was destroyed. Numele Theia provine din mitologia greacă: Theia era o titanidă care a dat naștere Selenei, zeița Lunii,[4] și sora lui Helios (Soarele) și a lui Eos (Aurora). Theia: Real Life. Potrivit ipotezei impactului gigantic, formarea Lunii este datorată coliziunii Pământului (mai bine-zis proto-Pământului) cu un obiect de talia planetei Marte, Theia fiind impactorul. An alternative name, Orpheus, has been used in the past but has largely been discarded. Gravitational perturbations by Venus could have eventually put it onto a collision course with the early Earth. Reprezentarea schematică a coliziunii între Pământ și Theia, Ipoteza formării Lunii în urma coliziunii Pământului cu planeta Theia (animație), „UCLA study shows the moon is older than previously thought”, „The Theia Hypothesis: New Evidence Emerges that Earth and Moon Were Once the Same”, „A primordial origin for the compositional similarity between the Earth and the Moon” Alessandra Mastrobuono-Battisti, Hagai B. Perets & Sean N. Raymond Nature 520, 212–215 (09 April 2015) doi:10.1038/nature14333, „New Evidence For 4.5 Billion Year Old Impact Formed Our Moon”, Planeta Theia ar fi fost similară Pământului, Pământul s-a ciocnit cândva cu Theia, un corp ceresc cât Marte, Cercetătorii au demonstrat că Luna s-a format în urma coliziunii unei planete cu Pământul, https://ro.wikipedia.org/w/index.php?title=Theia_(planetă)&oldid=12736484, Creative Commons cu atribuire și distribuire în condiții identice. [10][11] Such accounts assumed that if Theia had struck the proto-Earth head-on both planets would have been destroyed, creating a short-lived second asteroid belt between the orbits of Venus and Mars. Take your favorite fandoms with you and never miss a beat. [8], According to the giant-impact hypothesis, Theia orbited the Sun, nearly along the orbit of the proto-Earth, by staying close to one or the other of the Sun–Earth system's two more stable Lagrangian points ( i.e., either L4 or L5). [4], According to one version of the hypothesis, Theia was an Earth trojan about the size of Mars, with a diameter of about 6,102 km (3,792 miles). 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 merged with Earth's.

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