Luna 12 (E-6LF series) was an

unmanned space mission A robotic spacecraft is an uncrewed spacecraft, usually under telerobotic control. A robotic spacecraft designed to make scientific research measurements is often called a space probe. Many space missions are more suited to telerobotic rather ...

of the

Luna program The Luna programme (from the Russian word "Luna" meaning "Moon"), occasionally called ''Lunik'' by western media, was a series of robotic spacecraft missions sent to the Moon by the Soviet Union between 1959 and 1976. Fifteen were successful, ...

, also called Lunik 12.

Overview

Luna 12 was launched towards the

Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...

from an Earth-orbiting platform and achieved lunar orbit on October 25, 1966. The spacecraft was equipped with a television system that obtained and transmitted photographs of the lunar surface. The photographs contained 1100 scan lines with a maximum resolution of 14.9-19.8 m. Pictures of the lunar surface were returned on October 27, 1966. The number of photographs is not known. Radio transmissions from Luna 12 ceased on January 19, 1967, after 602 lunar orbits and 302 radio transmissions. Luna 12 was launched to complete the mission that Luna 11 had failed to accomplish—take high-resolution photos of the Moon's surface from lunar orbit. Luna 12 reached the Moon on October 25, 1966, and entered a 133 x 1,200-kilometer orbit. The Soviet press released the first photos taken of the surface on October 29—pictures that showed the

Sea of Rains Mare Imbrium (Latin ''imbrium'', the "Sea of Showers" or "Sea of Rains", "Sea of Tears") is a vast lava plain within the Imbrium Basin on the Moon and is one of the larger craters in the Solar System. The Imbrium Basin formed from the collis ...

and the Aristarchus crater. Resolution was as high as 15 to 20 meters. Film was developed, fixed, dried automatically, and scanned for transmission to Earth. No further photos were ever released. After completing its main imaging mission, Luna 12 was put into a spin-stabilized roll to carry out its scientific mission, which was successfully fulfilled. Luna 12 was the first soviet probe where deliberate steps were taken to prevent interception of its signals by

Jodrell Bank Observatory Jodrell Bank Observatory () in Cheshire, England, hosts a number of radio telescopes as part of the Jodrell Bank Centre for Astrophysics at the University of Manchester. The observatory was established in 1945 by Bernard Lovell, a radio astro ...

. When the probe was in the field of view of the observatory it began switch its signals between two different frequencies, something Jodrell Bank was not able to follow.

Legacy and Status

On January 21, 1967, the Soviet news agency

TASS The Russian News Agency TASS (russian: Информацио́нное аге́нтство Росси́и ТАСС, translit=Informatsionnoye agentstvo Rossii, or Information agency of Russia), abbreviated TASS (russian: ТАСС, label=none) ...

announced that Luna 12 had completed its mission, breaking contact with ground stations.

References

External links

Zarya - Luna programme chronology
{{Orbital launches in 1966 Luna programme Spacecraft launched in 1966 1966 in the Soviet Union Spacecraft launched by Molniya-M rockets Satellites orbiting the Moon Non Earth orbiting satellites of the Soviet Union