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The streaks on the Red Planet's surface appear to be caused by salty water, but how much water there is — and where it comes from — remains a mystery.
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NASA’s testing out an engine that will one day carry astronauts to Mars. The RS-25 engine is one of four that will power NASA’s Space Launch System (SLS) that will carry the Orion capsule to deep space destinations like Mars.
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The Beagle 2 Mars lander was lost in December 2003. Today, scientists confirmed their spacecraft was found partially deployed on the surface of the Red Planet.
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Scientists cheered and the prime minister congratulated his country on navigating "a route known to very few" to reach the Red Planet — something few other nations have accomplished.