Here are details about a : Space commemorative cover or Space Cover.
Kosmodrom / Ort : Baikonur
Stempeldatum: 8 Jan. 1973
Auflage : 150 Exemplare Ereignisart : Start Startrampe / Ort : Baikonur (KAZ) Bemannte / Robotische Mission : Robotisch Missionsziel/-typ : Lunar
ou?/where?: au sol - ground
autographe?: non - noneBeschreibung : The Luna 21 spacecraft landed on the Moon and deployed the second Soviet lunar rover (Lunokhod 2). The primary objectives of the mission were to collect images of the lunar surface, examine ambient light levels to determine the feasibility of astronomical observations from the Moon, perform laser ranging experiments from Earth, observe solar X-rays, measure local magnetic fields, and study mechanical properties of the lunar surface material.
After landing, the Lunokhod 2 took TV images of the surrounding area, then rolled down a ramp to the surface at 01:14 UT on 16 January and took pictures of the Luna 21 lander and landing site. It stopped and charged batteries until 18 January, took more images of the lander and landing site, and then set out over the Moon. The rover would run during the lunar day, stopping occasionally to recharge its batteries via the solar panels. At night the rover would hibernate until the next sunrise, heated by the radioactive source. Lunokhod 2 operated for about 4 months, covered 37 km of terrain including hilly upland areas and rilles, and sent back 86 panoramic images and over 80,000 TV pictures. Schlüsselwort/-wörter : #Kartographie, #Mond und Sonden, #Rover, #Sonde, WELTRAUM-REVUE : 10 - 2009 Letzte Änderung: 09/08/2016 @ 11h31
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Seite : future · Ref: ba 270 Weltraumereignis : LUNIK 21 · LUNA 21 / Ye-8 #204 ·LUNOKHOD 2 LUNAR ROVER · PROTON-K BLOK-D
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