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Yahoo! Answers is a community-driven question-and-answer (Q&A) website or a knowledge Yahoo! Answers was created to replace Ask Yahoo!, Yahoo!'s former Q&A platform which was discontinued in March The site .. Missing or empty |url= (help); |access-date= requires |url= (help); ^ Adamic, L.; et al. ( ). Good thing it doesn't; otherwise it would be out of date the following year Genesis 1 says that the earth was created on the first day of creation. We date meteorites, which are thought to be the same age as Earth. some patterns. those are regarding the earth's formation / weather.
The meteorite is an iron octahedrite which fell between 20, and 40, years ago.
The Canyon Diablo date has been backed up by hundreds of other dates, from both terrestrial samples and other meteorites. The meteorite samples, however, show a spread from 4. This is interpreted as the duration of formation of the solar nebula and its collapse into the solar disk to form the sun and the planets.
This 50 million year time span allows for accretion of the planets from the original solar dust and meteorites. The moon as another extraterrestrial body which has not undergone plate tectonics and which has no atmosphere, and therefore no weathering, provides quite precise age dates from the samples returned from the Apollo missions. Rocks returned from the moon have been dated at a maximum of around 4.
Martian meteorites which have landed upon the Earth, have also been dated to around 4. Altogether the concordance of age dates of both the earliest terrestrial lead reservoirs and all other reservoirs within the solar system found to date are used to support the hypothesis that the Earth and the rest of the solar system formed at around 4.
Independent verification of radiometric date of meteorites can be accomplished using studies of the sun.
How did the earth form?
The sun can be dated using "helioseismic" methods which strongly agree with the radiometric dates found for the oldest meteorites. Answers, once the "best answer" was chosen, there was no way to add more answers nor to improve or challenge the best answer chosen by the question asker; there is a display of thumbs down or thumbs up for each answer, but viewers cannot vote.
In Aprilthis was changed to allow for additional answers after a best answer is chosen, but the best answer can never be changed. Also, while "best answers" can be briefly commented upon, the comment is not visible by default and is hence hardly read. If the best answer chosen is wrong or contains problematic information, the only chance to give a better or correct answer will be the next time the same question is asked. The older answer will likely get higher priority in search engines.
Any new answer will most probably not be seen by any original questioner. Answers mascot is a cartoon hamster called Yamster. Yamster is a combination, or portmanteauof the words "Yahoo" and "hamster". The " gravitational drag " of this residual gas would have eventually lowered the planets' energy, smoothing out their orbits.
how did the earth form? | Yahoo Answers
As the large bodies moved through the crowd of smaller objects, the smaller objects, attracted by the larger planets' gravity, formed a region of higher density, a "gravitational wake", in the larger objects' path. As they did so, the increased gravity of the wake slowed the larger objects down into more regular orbits.
The asteroid belt initially contained more than enough matter to form 2—3 Earth-like planets, and, indeed, a large number of planetesimals formed there. Jupiter's gravity increased the velocity of objects within these resonances, causing them to shatter upon collision with other bodies, rather than accrete.
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Water is too volatile to have been present at Earth's formation and must have been subsequently delivered from outer, colder parts of the Solar System. Nice model and Grand tack hypothesis According to the nebular hypothesis, the outer two planets may be in the "wrong place".
Uranus and Neptune known as the " ice giants " exist in a region where the reduced density of the solar nebula and longer orbital times render their formation highly implausible.
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At their distance from the Sun, accretion was too slow to allow planets to form before the solar nebula dispersed, and thus the initial disc lacked enough mass density to consolidate into a planet. Saturn orbited the Sun once for every two Jupiter orbits.Dumbest Fails #54 - STUPID QUESTIONS On The Internet - Yahoo Answers (part 2)
These planetesimals then scattered off the next planet they encountered in a similar manner, moving the planets' orbits outwards while they moved inwards. This caused Jupiter to move slightly inward. Some of the scattered objects, including Plutobecame gravitationally tied to Neptune's orbit, forcing them into mean-motion resonances.