This blend produced by SkyNRG has been recertified to normal jet fuel standards and can be safely used without modifying the aircraft's systems.

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The engine allows a spaceplane to take off from a runway like any normal jet, and go as fast as Mac 5.5 on a jet-like engine.

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Early indications are that the Lion Air jet's approach was normal until perhaps the last minutes of the flight, said safety experts who have reviewed publicly available data.

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Later in the summer, the jet stream moved back to its normal position and the usual rainfall service was resumed.

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Warm conditions in the Atlantic and cooler conditions than normal in the Pacific Ocean also have forced the jet stream farther north and created a corridor for newly born hurricanes to move unimpeded from the ocean waters up the Atlantic coast, Liu said.

CNN: graphic