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The Mars Reconnaissance Orbiter (MRO) is a Mars probe launched in 2005 by NASA. It went into Mars orbit in 2006 for a two-year primary mission and is still operational in 2023 with hopes of using it into the late 2020s, working around some "aging" problems. Instruments:
Among its ongoing uses is scouting for Mars landing missions, and relaying communications for other Mars missions.