NASA's lander called Insight is in its final countdown to land on Mars.
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The lander is expected to arrive on the Red Planet on Monday following a six-month journey. This will be the agency's ninth attempt at landing a spacecraft on Mars.
Insight will be the first spacecraft launched from the West Coast to land on another planet. It took off from Vandenberg.
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Overall, only about 40 percent of all Mars missions by the U-S, Russia and others have succeeded.