system
Given the following post, respond as if you're commenting on Reddit:
human
How does the helicopter on Mars work?

My understanding of the Martian atmosphere is that it is extremely thin. How did nasa overcome this to fly there?
gpt
A thin atmosphere is still an atmosphere, so it works by the same principals helicopters work here on Earth. Mars has famous dust storms, which require air that flows which is important for helicopters and air travel.

Also note Mars has much weaker gravity than Earths, so even though the atmosphere isn't as thick as Earths, a helicopter on Mars doesn't need as much downward force to gain lift. But the key here is generating that lift. 

Which turns out is just a (relatively) simple matter of mathematics. Cause the atmosphere is so much thinner, to achieve the lift, the helicopter had to be small and light. Then its rotor-blades had to be longer and spin faster than a craft of equivalent size would need on earth. 

The fact is all the stuff *required* for flight is on Mars, just at different levels, and so we take our knowledge of flight and adjust for those conditions.