NASA announced that they found running water on Mars.
The discovery was made by NASA’s Mars Reconnaissance Orbiter.
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Water-bearing minerals were discovered on Mars by NASA's Curiosity Rover.
The Viking 2 became the second spacecraft to land on Mars.
Viking I lands on Mars.
NASA's Mariner 9 became the first spacecraft to orbit another planet when it entered Mars' orbit.
A team of NASA scientists declared that the Martian ALH 84001 meteorite might contain traces of alien life.
