What was the US military's secret space plane doing on its record-breaking mission?

The uncrewed X-37B space plane touched down at NASA’s Kennedy Space Station on Nov. 12 having spent a record 908 days in orbit

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Nov 20, 2022 - 16:00
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What was the US military's secret space plane doing on its record-breaking mission?
The uncrewed X-37B space plane touched down at NASA’s Kennedy Space Station on Nov. 12 having spent a record 908 days in orbit