The rover named Curiosity landed on Mars on August 6, 2012

CAPE CANAVERAL, Fla. - Curiosity has completed its main goal of finding evidence that life on mars could have existed. 

The rover has sent back to Earth more than 70,000 images of the red planet. 

Curiosity can drill into Mars' surface and uses a laser to analyze samples it collects. 

Curiosity became the first robot to drill on another planet.

Curiosity's onboard instruments helped scientists determine the Martian atmosphere hasn't changed much in the last 4 billion years.  People cannot survive in the thin atmosphere of Mars.

The mission of sending the rover to Mars cost more than $2 billion dollars. 

Curiosity has a Twitter account with over one million followers.

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