* Astronomy

Luna 6 was an attempted lunar soft landing mission. It was similar to the Luna 5 design, also carrying an imaging system and a radiation detector. It launched on 8 June 1965 at 7:41 UT. During the mid-course correction on 9 June the main retro-rocket failed to cut off as scheduled and fired until all of its propellant was exhausted, due to an erroneous ground command sent to the timer. Contact was lost at a distance of 600,000 km from Earth, the spacecraft presumably entering a heliocentric orbit.
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