PHOTOS: Mission Landing on Mars

Here are some pictures about the trial landing on Mars.

Mission landed on Mars is very heavy and difficult. Only a very few mistakes that can be done. So far, more than two-thirds of the 36 missions launched to the planet have failed.
Common causes of failure of the landing missions to Mars, among others, is due to a defective component, interference with the rocket or other errors that caused the plane hit the planet's surface or disappear entirely.
For example, in 1970, NASA sent a plane to the planet Mars 3. On December 2, 1971, Mars 3 landed smoothly. Nevertheless, only 20 seconds to start capturing images, the signal suddenly disappeared from Mars 3.
On July 20, 1976, NASA sent to Mars Viking 1. This mission is a mission to Mars landing is successful first. This mission was followed by Viking 2 on September 3 that year.
Right on the birthday of the United States namely independence July 4, 1997, NASA re-send explorers to Mars vehicle. This vehicle successfully reached the planet and doing his job.
Unfortunately, two years later, Mars Polar Lander mission, which aims to observe the planet's polar region failed landing. The plane crashed in around the south pole of Mars.
The same thing happened again. Scientists make predictions about the error density Martian atmosphere. As a result, the aircraft's parachute Beagle 2, which NASA launched in 2003 failed to open. The plane had collided with her hard on the surface of Mars. Here's a photo: Foreign Missions to Mars.