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December 3, 2016

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In this undated image provided by NASA a saucer-shaped test vehicle holding equipment for landing large payloads on Mars is shown in the Missile Assembly Building at the US Navy's Pacific Missile Range Facility in Kauai, Hawaii.

NASA / AP

In this undated image provided by NASA a saucer-shaped test vehicle holding equipment for landing large payloads on Mars is shown in the Missile Assembly Building at the US Navy's Pacific Missile Range Facility in Kauai, Hawaii.