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The views from a helicopter flying across Mars will also provide Nasa with a stellar public relations tool as it seeks worldwide support for sending humans to the planet in the 2030s or later.

After the Rover lands on the Mars in 2021, the helicopter will be dropped onto the ground in a suitable spot, where it can charge its batteries and do some pre-launch tests.

As according to Nasa, it weighs about four pounds (1.8 kilograms), with a fuselage the size of a softball, its blades will spin at nearly 3,000 rpm, roughly 10 times the rate employed by helicopters on Earth.

Due to the atmospheric difference between Earth and Mars, the helicopter will be the equivalent of 100,000 feet in the air at home when it is on the ground on Mars. The robot will give scientists a bird's eye view of the surface of the red planet.

NASA will send a helicopter to Mars to see whether it is possible to fly a craft that is heavier than air. The Martian atmosphere is so thin that the altitude of the helicopter at takeoff on Mars already corresponds to an altitude of 30,500 meters on Earth. When the vagabond come down on the earth's surface area, it will certainly after that locate a great location to put down the helicopter, release it, and afterwards roll away. An helicopter on Mars, however, poses a special technical challenge.

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Double screw Mars Helicopter is able to rotate at a speed 10 times the speed of the earth's helicopters.

"It's fitting that the United States is the first nation in history to fly the first heavier-than-air craft on another world", said Representative John Culberson (Texas).

"The idea of a helicopter flying in the sky of another planet is exciting". The tiny helicopter will test the capabilities for controlled flight in the thin atmosphere of Mars and is also expected to pave the way for future uses across the solar system. NASA hopes the helicopter will ascend to around 10 feet and hover there for around 30 seconds on its first flight.

Successful tests would open the door to more aerial observation and exploration during future missions, however.

Mars 2020 is scheduled now to launch sometime in July 2020 with a landing slated for February 2021. The six-wheeled rover will hunt for signs of habitable environments as well as sites that may have once hosted microbial life, examining the Red Planet with 23 cameras, a microphone and a drill to collect samples.