By Luis Matthews
Failed to reach Earth orbit.
Contact was lost en route.
Failed to leave Earth orbit.
Mars 4 arrived at Mars on February, 1974, but failed to go into orbit due to a malfunction of its breaking engine.
Phobos 1 was sent to investigate the Martian moon Phobos.
Phobos 2 arrived at Mars and was inserted into orbit on January 30, 1989.
The Mars Pathfinder delivered a stationary lander and a surface rover to the Red Planet
This Mars orbiter reached the planet on October 24, 2001 and served as a communications relay for future Mars missions.
"Opportunity", also known as MER-B, was launched on July 7, 2003 and successfully arrived on Mars on January 24, 2004.
The Mars Science Laboratory was launched on November 26, 2011.
InSight will take the first look into the deep interior of Mars to see why the Red Planet evolved so differently from Earth as one of our solar system's rocky planets.