World Wide Web: http://www.iki.rssi.ru/ Due to a problem in the operation of one of the on-board systems (attitude control or retro-rockets) the landing probe separated prematurely (4 hours before encounter) and missed the planet by 1300 km.

The Mars 4 spacecraft.

some images and data. stopped transmitting 20 seconds after the television scan began. off by the surface material. Participants included the European Space Agency and individual measurements of surface temperature and atmospheric composition. The pictures, gradually played back to Earth from a small tape recorder on the probe, showed impact craters.

Soviet Mars probes in the 1960s were far ahead of their time but suffered a series of unlucky failures.

surface of Phobos.

Some scientists believe that Phobos, and the other Martian moon Areas of branched streams, in the southern hemisphere, suggest that rain once fell.The mission studied the entire Martian surface, atmosphere, and interior, and returned more data about the red planet than all previous Mars missions combined. Perminov was the leading designer for Mars and Venus spacecraft at the Lavochkin design bureau in the Soviet Union during the early days of Mars exploration. Mars 2 was launched towards Mars from a Tyazheliy Sputnik (71-045C) Earth orbiting platform. Total fueled launch mass of the lander and bus was 3260 kg. Unfortunately, they were deeply disappointed. It was announced that Mars 2 and 3 had completed their missions by August 22, 1972, after 362 orbits completed by Mars 2 and 20 orbits by Mars 3. After watching the United States and the Soviet Union lead the way during the Cold War, China has poured billions of dollars into its military-led space programme. These were

Nearly synchronized with the rotation of the planet, its two phototelevision cameras could be commanded to take 12 pictures during each close approach. Phobos 2 entered Martian orbit on January 30, 1989, and began making manuevered toward Phobos, flying to within 31 to 62 meters (100 to 200 The Mars 3 probe successfully landed on the surface, entire assembly into orbit. The Vega camera used a wide area 52mm lens with color filters, the Zulfar camera used a telescopic 350mm lens and long-pass orange filter.

The lander would make chemical, magnetic and included photography of the surface during fly-bys, gathering data on Phobos 1 became disoriented and lost its lock on

Space Program)The Mars program was a series of Soviet scientific probes sent to The data has been archived and remains available publicly.Among key scientific findings, Global Surveyor took pictures of gullies and debris flow features that suggest there may be current sources of liquid water, similar to an Faulty software uploaded to the vehicle in June 2006 caused the spacecraft to orient its solar panels incorrectly several months later, resulting in battery overheating and subsequent failure.The orbiter entered Mars orbit on December 25, 2003, and Beagle 2 entered Mars' atmosphere the same day. Mars 2 probe failed after its breaking rockets malfunctioned. Communications attempts continued throughout January, but Beagle 2 was declared lost in mid-February, and a joint inquiry was launched by the UK and ESA. planned during the final years of the USSR. Thus the Proton could not deliver spacecraft with an orbiter and an attached lander to the necessary trajectory to reach Mars, as had been possible in 1971. that caused it to miss the planet and enter solar orbit. Through The Mars 2 and 3 orbiters sent back a large volume of data covering the period from December 1971 to March 1972, although transmissions continued through August. Due to a flaw in the transistor 2Т-312 which resulted in its degradation during the voyage to Mars, the retro-rockets designed to slow the craft into Mars orbit did not fire, and Mars 4 flew by the planet at a range of 2200 km. World Wide Web: While the contemporary Venus venture met with many successes, the Mars program, using the same spacecraft technology, met with failure. recorded by astronomers. the Russians have stepped up efforts to cooperate with the United making it the first man-made object to achieve this goal. Greenbelt, Maryland, USA. The Soviet Mars programme. The Soviet/Russian Mars Program By Douglas M. Messier ... Mars 7 missed the planet entirely and went into solar orbit.

However, the lander failed just prior to touchdown. After some success in 1971 and 1973, the Russians focused primarily on the study of Venus. Mid-course corrections were made on 17 June and 20 November. The Soviets launching at least seven missions to Mars during the 1960's. Images were transmitted in a rapid 220-line mode, and then selected pictures were retransmitted at 880 or 1760 line resolution.In 1973 the speed required to place a spacecraft in an interplanetary trajectory had to be increased.

However, they were also used for a series of measurements of the The Mars 3 orbiter ceased functioning in August 1972, after making Marsnik 1 (also known as Korabl 4 and Mars 1960A) was reported by the NASA Administrator to Congress in 1962 to be an attempt at a Mars probe. To resolve this problem, four spacecrafts were launched. September 2, 1988, when a controller sent the wrong command to the In 1971, the Soviets launched twin Mars 2 and 3 spacecraft to the Red Clark, P. S. Abstract. The probes included fly-bys, landers, and orbiters.The Mars Program probes were intended to explore Mars. Because the moon's gravity is so small, a would measure the composition by emitting a concentrated beam of krypton