Maven in mars

The satellite maven is now in orbit around the planet Mars, it reached the Mars orbit after 700 million kilometers ,the Scientifics want to find clues of Mars early history ,how the atmosphere evolved ….etc ,it was an earth like planet billions of years ago ,mars has undergone climate change ,the Scientifics wants to know what had happened then ,it was warm and wet billion of years ago ,but now the red planet is completely cold .
Mars is fourth in order from the sun next to the planet earth.

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