As is often the question, will jet lag impact the game at all?

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Mark Fichtel, chief executive of the New York Board of Trade, remembers the impact of the initial jet strike and looking out the windows of his office in Four World Trade Center to see a shower of debris.

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According to older pilots, this useless statistic came into favour at the time of conversion to jet aeroplanes when the impact of flying over the weather, rather than through it, was novel.

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"Apparently, there is a harder, rockier material beneath this veneer of gravel and pebbles, and obviously there's some impact ejecta, " Grotzinger told reporters at NASA's Jet Propulsion Laboratory, where controllers operate the rover.

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"No Earth impact is possible, " said asteroid expert Donald Yeomans at the Jet Propulsion Laboratory in Pasadena, Calif.

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In a third study published in Nature, Jeffrey Andrews-Hanna and Maria Zuber of the Massachusetts Institute of Technology (MIT) in Cambridge, and Bruce Banerdt of Nasa's Jet Propulsion Laboratory (JPL) in California, provide impact evidence from gravitational and topographical signatures on Mars.

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After the impact, Osborn said, he saw the parachute of the Chinese pilot and his smoking fighter jet plunging toward the South China Sea.

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To really see the impact of regional airlines these days, just fly the longest flight in miles on a regional jet in the U.S. That's a 1, 501-mile United flight between Austin, Texas and San Francisco, which takes about four hours going west into the wind.

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The studies, published in the journals PLoS One and Reproductive Toxicology, looked at the impact of phthalates, chemicals found in some forms of plastics, and a substance called JP8, found in jet fuel.

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