NASA commentator Rob Navias announced the end of the mission and the space shuttle program.

美国航空航天管理局的讲解员罗布·内维亚斯宣布，航天飞机计划和任务，从此告终。

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"It's pretty clear that we're going to want to have a course of action to take as quickly as possible, " Nasa spokesman Rob Navias said at the Johnson Space Center in Houston, Texas.

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