, all three missions are launching this summer to take advantage of a launch window that opens for a few months every two years, when Earth and Mars closely align — making for a dramatically shorter trip.Tianwen-1's small rover comes equipped with a laser to study Martian soil and rocks.If the Tianwen-1's lander and rover spacecraft successfully touch down, the mission would make China only the third nation to explore the Martian surface, along with the United States and Russia.
. Its atmosphere is thick enough to burn up a spacecraft, yet too thin to completely slow down a mission during reentry . Fewer than half of all missions sent to land on Mars have arrived safely.
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