The astronauts aboard the Space Shuttle Discovery today used a computer simulator to practice landing in preparation for their planned return to Earth tomorrow.

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The difference between the Montrose rig-simulator and (say) a flight simulator is that it is not completely under the computer's control.

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The computer was conceived as a U.S. Navy flight simulator, and development had begun in 1946.

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Teso told the crowd that he used flight-management hardware that he bought on eBay and publicly available flight-simulator software that contains at least some of the same computer coding as real flight software.

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You can also test your apps using the included iOS Simulator, which supports iOS 6. iOS SDK 6.0 requires a Mac computer running OS X 10.7.4 or higher (Lion).

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