Scientists have not found any signs of life on Mars yet, but they say a robotic vehicle called “Curiosity” is helping them learn a lot about the planet’s history and climate.
Curiosity landed on Mars in August 2012 after travelling through space for more than eight months.
It was sent to Mars by scientists from NASA in the United States.
Curiosity is a motorized vehicle called a “rover” which is controlled by scientists back on Earth.
It is about the size of a car and has six wheels that allow it to travel across the planet’s surface and climb over sand and rocks.
It also has a robotic arm, cameras, and instruments such as a scoop, drill and microscope that allow it to examine things it finds on the surface.
Then it transmits the information back to Earth.
The main purpose of Curiosity’s mission is to find out if anything could live on Mars, either now or in the past.
On Nov. 2, NASA scientists held a press conference to discuss what Curiosity had found in its first two months on Mars.