how big was theia - EAS
- About 6,102 km (3,792 miles)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). 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.
en.wikipedia.org/wiki/Theia_(planet) - People also ask
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See all on Wikipediahttps://en.wikipedia.org/wiki/Theia_(planet)Theia is hypothesized to have orbited in the L4 or L5 configuration presented by the Earth–Sun system, where it would tend to remain. In that case, it would have grown, potentially to a size comparable to Mars, with a diameter of about 6,102 kilometres (3,792 miles). Gravitational perturbations by Venus could have … See more
Theia 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 some of the resulting ejected debris gathering to form the See more
Theia was named after Theia, one of the Titans, who in Greek mythology was the mother of Selene, the goddess of the Moon, which parallels the planet Theia's collision with the early Earth that is theorized to have created the Moon. In modern See more
From the beginning of modern astronomy, there have been at least four hypotheses for the origin of the Moon:
1. A single body split into Earth and Moon
2. The Moon was captured by Earth's gravity (as most of the outer planets' smaller moons were captured) See moreAccording 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). Theia was eventually perturbed away … See more
Wikipedia text under CC-BY-SA license- https://www.grunge.com/419706/the-truth-about...
WebMay 25, 2021 · But Earth's moon — "the Moon" — is actually quite special. It's unusually large in comparison to Earth, at 27% Earth's size, which accounts for tidal forces that may, as Scientific American outlines, …
- https://www.sciencealert.com/we-may-have-finally...
WebMar 9, 2020 · Around 4.5 billion years ago, something the size of Mars collided with a newly formed Earth, to colossal effect. This object is not only thought to have fused with Earth …
- Estimated Reading Time: 5 mins
- https://newsroom.ucla.edu/releases/moon-was...
WebJan 28, 2016 · Scientists had already known about this high-speed crash, which occurred almost 4.5 billion years ago, but many thought the Earth …
- Estimated Reading Time: 4 mins
- https://astronomy.stackexchange.com/questions/...
WebM p i E = Greatest possible mass of pre-impact Earth M E = Mass of Earth today = 6.0 × 10 24 k g M M = Mass of the Moon = 7.3 × 10 22 k g M T = Mass of Theia ≊ 6.4 × 10 23 k g. …
- Reviews: 4
- https://en.wikipedia.org/wiki/Giant-impact_hypothesis
WebThe giant-impact hypothesis, sometimes called the Big Splash, or the Theia Impact, suggests that the Moon formed from the ejecta of a collision between the proto-Earth and …
- https://www.popularmechanics.com/space/a19143/...
WebJan 28, 2016 · But recent analysis of material taken from the Apollo 12, 15, and 17 missions tells a different tale: that of a violent head-on collision, one that left the Earth forever scarred with the fragments...
- https://astronomy.com/news/2019/05/giant-impact...
WebMay 31, 2019 · But thanks to vast computational improvements, by the early 2000s, researchers identified what would later become known as the "canonical" impact theory: a low-velocity collision at about a...
- https://www.space.com/26142-moon-formation-giant...
WebEarth formed about 4.5 billion years ago, and scientists think the moon came into being shortly afterward. The prevailing explanation for the moon's origin, known as the Giant Impact Hypothesis, is...
- https://www.space.com/moon-forming-impact-one-two-punch
WebSep 24, 2021 · According to a new theory, there were two giant impacts in a row, separated by 100,000 to 1 million years, involving a Mars-sized body called Theia and proto-Earth.
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