12h 22min, jul 7, 1988 y - Phobos 1
Failed Mars orbiter (USSR)
Phobos 1 was designed to study the Sun and interplanetary space while on its way to Mars. Once in orbit around Mars, it was going to study the Red Planet and take close-up images of its moon Phobos. However, on September 2, 1988, only two months in to the flight, controllers on the ground accidentally uploaded software containing a command that deactivated the spacecraft's attitude control thrusters. The spacecraft then turned its solar panels away from the Sun and was unable to recharge its batteries. As a result, the mission was lost.
Added to timeline:
the videos are in the parts of Mars Exploration Rover Spirit...