After landing in 2004 and two robot vehicles began to collect samples and study the environment on this planet …

The U.S. space agency NASA has marked the anniversary landing on Mars.

After landing in 2004 and two robot vehicles began to collect samples and study the environment on this planet, reports the Voice of America.

It is intended that the vehicle handle at least three months in harsh conditions on Mars but it and after five years and continue to work and sent scientists gathered data on the Earth.

So far we have passed 21 kilometers and sent 250 thousand pictures.