The explanation that I wrote is true, but the clause preceding the word as in not logically connected to the second clause. I am not sure that I improved the article. Therefore you cannot possibly be struck by a meteor. the plasma trail) always ceases at altitudes greater than 8km (5 miles) - this might be worth including in the article with suitable references. Somewhere I remember reading that even for meteorites reaching the earth's surface intact, the visible meteor (i.e. In the vast majority of cases, the meteoroid either ablates totally or slows down sufficiently so that it is no longer leaving a plasma trail long before it reaches the surface of the earth. the illuminated trail of ionised plasma it leaves behind. You need to consider that a meteor is simply the visible expression of the passage of a meteoroid through the atmosphere, i.e. Preceding unsigned comment added by 160.109.98.44 ( talk) 18:50, 2 August 2011 (UTC) Reply There are some references to people being struck by meteorites in the article Meteorite. I think there is a need for info on people getting hit by it or a link directing to articles that talk about it. Preceding unsigned comment added by Mstreman ( talk Thus a meteoroid arrives at the ground constrained between 120-400 miles per hour(sorry about the cross use of metric and American measurements) So they do hit the ground hard enough to excavate an "impact pit" which may be none to a few inches to a few feet deep. Depending on initial velocity and mass, can enter dark flight between 100 and 5 miles about sea level. For most meteoroids under 1 meter at entry, all the cosmic velocity has been depleted at or above by this altitude and the body free falls under normal gravitational acceleration. As 95%(?) of the atmosphere lies below 5 miles, the 5 mile mark represents a relatively dense fluid compared to the 120-140 miles of atmosphere the meteoroid has traversed. Incandescence cannot continue below approximately 5 miles above sea level. It enters "dark flight" and decelerates to "free fall" velocity. Once the speed falls below approximately 4200mph the meteorite stops ablation and incandescence( glowing). IF the meteoroid is small it will not survive the ablation of entry. The result is both the speed and the mass of the meteoroid is decreasing at an increasing rate. contribs) 14:12, 2 November 2012 (UTC) Reply.Simpler: "Force of friction slows the incoming meteors." - Preceding unsigned comment added by 77Mike77 ( talk Previous paragraph unnecessarily wordy.Much of the mass is carried off as a molten mist further reducing the speed. Meteoroids arrive in the upper atmosphere at a given cosmic velocity: typically 25,000-78,000kph(? approximate from memory needs to be verified?) This cosmic velocity x mass of the meteoroid = momentum/ kinetic energy which is greatly converted to heat and light energy. Best: HarryZilber ( talk) 17:15, 17 October 2010 (UTC) Reply I think the questions was not what but how. You'll see that Meteoroids that survive the plunge through the Earth's atmosphere and land on the Earth are called meteorites (click on the link to see that article). How are meteoroids stopped from hitting hard on the earths surface -Preceding unsigned comment added by 59.183.246.63 ( talk) 06:45, 17 October 2010 (UTC) Reply Please reread the introduction to this article. This article has been rated as Mid-importance on the project's importance scale. This article has been rated as C-Class on the project's quality scale. Geology Wikipedia:WikiProject Geology Template:WikiProject Geology Geology articles If you would like to participate, you can choose to edit this article, or visit the project page for more information. Meteoroid is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource.
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