The Viking 1 lander was the first US spacecraft ever to land successfully on Mars. Through the historic two missions of the Viking project, a total of over 50,000 images of Mars were collected (with 4,500 coming from the landers), with both orbiters and landers sending back information that changed everything scientists thought they knew about the Red Planet. The Viking mission has profoundly influenced scientific thinking about the question of life on Mars. Based on the results obtained from a number of Viking investigations, it is clear that the surface of the planet is too hostile to support a carbon-based biota. ... and Viking images have revealed sites on Mars where further exploratory studies ...The Mars 2020 mission Perseverance rover is the first step of a roundtrip journey to return Mars samples to Earth. (2020-present) Read More. ... The second of twin probes conducting experiments to look for signs of life on Mars, Viking 2 analyzed a second site during its mission until its power source ran out. (1975-1980)Three different types of biochemical experiments on samples of Martian surface material (‘soil’) were conducted during the Viking mission to Mars. In the carbon assimilation or pyrolytic release (PR) experiment, 14 CO 2 and 14 CO were exposed to soil in the presence of light. A small amount of gas was found to be fixed by soil (interpreted ...The Viking Mission to Mars was the most sophisticated and interesting planetary missions ever executed. The enclosed table summarizes some of the operational parameters and it should be remembered that the landers both lasted through winters with temperaures of -118 degrees Celsius and Lander 1, the Thomas Mutch …Aug 6, 2020 · The Viking Spacecraft The Viking Mission to Mars thus combined two major goals: to study the atmosphere and geology of the entire planet, and to analyze its soil and search for life in two specific locations. Each of the two Vikings launched toward Mars in 1975 was a double spaceship. One part, the Orbiter, would circle …We’ve made it to the moon, but the National Aeronautics and Space Administration (NASA) isn’t stopping there. Over the years, plenty of iconic space-exploration missions have taken...Abstract. As part of the Viking mission to Mars in 1975, an automated set of instruments is being built to test for the presence of metabolizing organisms on that planet. Three separate modules are combined in this instrument so that samples of the Martian surface can be subjected to a broad array of experimental conditions …A central purpose of Viking was to search for evidence that life exists on Mars or may have existed in the past. The missions carried three biology experiments the prime purpose of which was to seek for existing microbial life. In addition the results of a number of the other experiments have biological implications: (1) The elemental …1 day ago · The Viking 1 spacecraft was inserted into Mars orbit on 19 June 1976 and trimmed to a 1513 x 33,000 km, 24.66 hr site certification orbit on 21 June. Imaging of candidate sites was begun and the landing site was selected based on these pictures. The lander and its aeroshell separated from the orbiter on 20 July 08:51 … Orbiter returned over 36,000 images; lander returned first image from the surface of Mars and conducted soil experiments. 23. 1975. Viking 2 Orbiter/Lander. US. Success. Returned 16,000 images and extensive atmospheric data and soil experiments. 24. Three different types of biochemical experiments on samples of Martian surface material (‘soil’) were conducted during the Viking mission to Mars. In the carbon assimilation or pyrolytic release (PR) experiment, 14 CO 2 and 14 CO were exposed to soil in the presence of light. A small amount of gas was found to be fixed by soil (interpreted ...Mission name: Viking 1 and 2 Viking Project NASA's Viking Project was the first mission to reach the martian surface and the first to search for evidence of life on Mars. Mission news and discoveries. The Library of Congress presents Space on the Page! March 16, 2022. In Memoriam, Dr. Gil Levin July 30, 2021.1 day ago · Mars arrival: September 12, 1997 Contact lost: November 5, 2006. Mars Global Surveyor was the first completely successful Mars orbiter since Viking 1 shut down in 1980. The start of Mars Global Surveyor’s science mission was delayed due to a problem with one of its solar panels that caused its aerobraking period to last …Solar System. Mars. Viking at 40: How NASA Mission Brought Mars Into the Light. News. By Nola Taylor Tillman. published 20 July 2016. The first color image taken …Dec 6, 2012 · NASA's Viking 2 was a joint orbiter-lander mission that saw the second U.S. landing on Mars on Sept. 3, 1976. Viking 2's lander touched the Red Planet just weeks after its sibling, Viking 1. The ...4 days ago · Viking Mars. Viking Mars set off on her maiden voyage in 2022 and with 39 unique cruise itineraries lined up around the world this season, each of her 930 passengers will experience understated elegance, modern Scandinavian design, verandas from every cabin and a ship engineered at a scale that allows direct …Mar 18, 2024 · The two "Missions to Mars" spacecraft, Viking I and Viking II, consisted of an orbiter and a landing component. Launched at different times (Viking I was launched in August 1975, and Viking II was launched a month later), each craft took approximately one year to secure itself in Mars's orbit. Identifying a suitable …Oct 30, 1977 · The behavior of Mars as observed by the Viking infrared thermal mapper (IRTM) is considered. The IRTM is a 28-channel, 4-telescope radiometer that operated in six spectral bands. The studies ...The Viking mission to Mars, a continuation of NASA's Mariner program to explore the inner planets, accomplished the first successful landings of spacecraft on another planet (Plate 16). It was initiated in 1968 with the principal responsibility assigned to the Langley Research Center (LaRC) in Hampton, Virginia, assisted by the Jet …Jan 26, 2016 ... The Viking Mission Museum, which was launched last Thursday (Jan. 21), displays an initial exhibition of more than 300 artifacts from the Viking ...Feb 16, 2021 · Credit: NASA/JPL-Caltech. About 3.9 billion years ago, a wayward rock slammed into Mars, punching a 45-kilometre-wide hole into its surface. On 18 February, NASA plans to land its latest rover ...Sep 30, 1977 · Temperatures observed during the Viking primary mission range from 130 to 290 K. Surface thermal inertias from 1.6 to 11×10 −3 cal cm −2 s −1/2 K −1 are mapped, and they correlate with surficial geologic units. An equatorial map of bolometric albedo generally correlates with prior narrowband observations.Sep 30, 2022 · Viking: Directed by Stéphane Lafleur. With Steve Laplante, Larissa Corriveau, Fabiola Nyrva Aladin, Hamza Haq. A behavioral research team observes and attempts to replicate the experiences of the first manned mission to Mars. Jul 1, 1976 · The Viking Mission search for life on Mars. Harold P. Klein 1, Joshua Lederberg 2, Alexander Rich 3, Norman H. Horowitz 4, Vance I. Oyama 5 & ...Risk has been described as having two components: (i) the likelihood that a given hazard will occur, and (ii) the severity of the consequences if the hazard does occur [9]. A risk assessment aims ... Two Viking spacecraft wil1 be launched to Mars from Cape Canaveral this month in the United States' first attempt to land on another planet. The Viking Project is managed by the NASA Langley Research Center, Hampton, Virginia. Viking launch activities can be monitored at the Jet Propulsion Laboratory, Pasadena, per the following schedule: Mar 10, 2024 · Viking 1. August 20, 1975 [1] Last launch. Viking 2. September 9, 1975 [2] The Viking program was a NASA mission that sent two spacecraft to the planet Mars. These spacecraft were called Viking 1 and Viking 2. [3] Each spacecraft was made of an orbiter and a lander. The orbiters took pictures of Mars from their orbit and sent information to … The Viking Program consisted of a pair of American space probes sent to Mars, Viking 1 and Viking 2. Each spacecraft was composed of two main parts: an orbiter designed to photograph the surface of Mars from orbit, and a lander designed to study the planet from the surface. The orbiters also served as communication relays for the landers once ... Mars. Viking Mission Briefing. June 7, 1976. The NASA press room for the Viking Mars landing mission will open Monday, June 14, in the von Karman auditorium at the Jet …Jul 20, 2016 · Gil Levin. Forty years ago today, the first of two landing probes of NASA’s Project Viking touched down on planet Mars. Discover contributor Dr. David Warmflash spoke with Dr. Gilbert Levin ...Nov 13, 2020 · Viking 2 view of the Martian satellite Deimos taken from 500 km distance. Deimos is about 8 km across at its widest part. Note the smoother appearance of the craters, caused by partial burial in dusty regolith. This Viking 2 image shows the surface of Deimos from a distance of 30 km. Features as small as 3 meters across can be seen.Aug 6, 2020 · September 3, four Viking Mars spacecraft—two in orbit and two on the surface, were simultaneously collecting new and previously unobtainable data and transmitting that data back to Earth. The first Mars missions, Mariner 4 (passed within 9850 kilometers of Mars on July 14, 1965), Mariner 6 (July 31, 1969) and Mariner …The primary mission objectives of the Vikings were to place two orbiters around Mars and two landers on its surface in 1976 to obtain high resolution images of …Jul 6, 2023 · On a related note, Gilbert Levin, who was the principal investigator for the Labeled Release Experiment for both Viking landers, maintained that we did find life on Mars. He outlined his stance in ...Feb 9, 2010 ... During the dual Viking missions, the two orbiters imaged the entire surface of Mars at a resolution of 150 to 300 meters, and the two landers ...Highlights. Viking 1 and 2 were a pair of NASA Mars landers and orbiters that launched in 1975 and arrived in 1976. The orbiters created global maps while the landers examined the surface up close. The landers performed …Aug 31, 2018 · News. By Leonard David. ( space.com-leonard-david ) published 31 August 2018. NASA's twin Viking landers touched down on Mars in 1976 to hunt for signs of life on the Red Planet. Forty years later ... 1978 15c Viking Missions to Mars # 1759 - 1978 15c Viking Missions to Mars $0.35 - $34.50) -+ Image Condition Price Qty; Classic First Day Cover ... The First Viking Mission to Mars. G. A. Soffen and C. W. Snyder Authors Info & Affiliations. Science. 27 Aug 1976. Vol 193, Issue 4255. pp. 759 - 766. DOI: …As of 2014, it takes approximately 150 to 300 days for a spacecraft to travel from Earth to Mars. The time depends on the launch speed, how much fuel is used and the alignment of E...Jul 21, 2016 ... “NASA's Viking 1 and 2 missions to Mars, each consisting of an orbiter and a lander, became the first space probes to obtain high resolution ...Oct 13, 2023 · The Viking Mars mission was performed by two spacecraft, Viking 1 launched on August 20, 1975, and Viking 2, launched September 9, 1975. Each spacecraft consisted of an orbiter and a lander, which traveled attached together for nearly a year to reach Mars orbit. The landers then separated from the orbiters …Sep 26, 2023 · Temperatures on Mars can range from -284 degrees F to 86 degrees F. The atmosphere on Mars is 96% carbon dioxide. One day on Mars lasts about 37 minutes longer than an Earth day. A year on Mars is almost twice as long as a year on Earth. Gravity on Mars is about one-third of the gravity on Earth. Viking 2 will orbit Mars on August 7 with the landing scheduled for September 4. The Viking mission is conducted by the Langley Research Center, Hampton, VA. JPL is responsible for the Orbiter spacecraft and tracking and communications. Martin Marietta, Denver, Colorado, is responsible to Langley for the Lander. 818-354-5011. Two Viking spacecraft wil1 be launched to Mars from Cape Canaveral this month in the United States' first attempt to land on another planet. The Viking Project is managed by the NASA Langley Research Center, Hampton, Virginia. Viking launch activities can be monitored at the Jet Propulsion Laboratory, Pasadena, per the following schedule: Mission: Go to PIAxxxxx: Refine this list of images by: Spacecraft: Instrument: Click on an image for detailed information ... Viking Lander 1's U.S. Flag on Mars Surface Full Resolution: TIFF (93.11 kB) JPEG (13.19 kB) 1997-02-28: Mars: Viking: Camera 2: 498x512x3: PIA00567: Sunset at the Viking ...Sep 3, 2010 · The Viking mission was planned to continue for 90 days after landing. Each orbiter and lander operated far beyond its design lifetime. Viking Orbiter 1 functioned until July 25, 1978, while Viking Orbiter 2 continued for four years and 1,489 orbits of Mars, concluding its mission August 7, 1980. Because of the …Solar System. Mars. Viking at 40: How NASA Mission Brought Mars Into the Light. News. By Nola Taylor Tillman. published 20 July 2016. The first color image taken …The Viking missions cost $1.06 billion, which, when adjusted for inflation, remain NASA's most expensive robotic planetary science mission of all time.Mar 1, 2022 · Mars missions have been launching for over 50 years. Humanity has sent orbiters, probes and landers to Mars but not every mission has been successful. ... Mariner 9 and the Viking missions, 1971 ...Feb 9, 2010 ... During the dual Viking missions, the two orbiters imaged the entire surface of Mars at a resolution of 150 to 300 meters, and the two landers ...The Viking mission to Mars, a continuation of NASA's Mariner program to explore the inner planets, accomplished the first successful landings of spacecraft ...The Viking Mission included the insertion of two unmanned spacecraft into orbit about Mars and the deployment of a soft-lander from each.Jul 14, 2006 · Viking performed the first successful entry, descent and landing on Mars. Derivations of a Viking-style thermal protection system and parachute have been used on every U.S. Mars lander mission, including Mars Pathfinder and the Mars Exploration Rovers, Spirit and Opportunity. NASA's Langley Research Center, Hampton, Va., managed the Viking Program. Viking 1 was launched Aug. 20. l975, and arrived in Mars orbit June l9, 1976. Viking Lander 1 touched down on the Chryse Plains July 20, 1976. Viking 2 was launched Sept. 9, 1975. It reached Mars Aug. 7, 1976, and Lander 2 dropped to the surface Sept. 3, 1976. The planned lifetime for the spacecraft was 90 days after landing.Both the Viking 1 and Viking 2 Orbiters collected years of high-resolution imagery and scientific data. All blazed a trail on the #JourneyToMars, which will one day take humans to the Red Planet too. Enjoy the retro-style artwork commemorating the 40th anniversary of NASA's Viking 1 and 2 missions to Mars! Read more on …The surprise discovery of perchlorates by the Phoenix Mars mission 32 years after the Viking ... On Mars, the Viking lander scooped up some Martian soil, put it ...Jun 10, 2021 · Project Viking Fact Sheet. Viking was the culmination of a series of missions to explore the planet Mars ; they began in 1964 with Mariner 4, and continued with the Mariner 6 and 7 flybys in 1969, and the Mariner 9 orbital mission in 1971 and 1972. Viking was designed to orbit Mars and to land and operate on the …Feb 16, 2021 · Credit: NASA/JPL-Caltech. About 3.9 billion years ago, a wayward rock slammed into Mars, punching a 45-kilometre-wide hole into its surface. On 18 February, NASA plans to land its latest rover ...Viking 1 was launched Aug. 20. l975, and arrived in Mars orbit June l9, 1976. Viking Lander 1 touched down on the Chryse Plains July 20, 1976. Viking 2 was launched Sept. 9, 1975. It reached Mars Aug. 7, 1976, and Lander 2 dropped to the surface Sept. 3, 1976. The planned lifetime for the spacecraft was 90 days after landing. Orbiter returned over 36,000 images; lander returned first image from the surface of Mars and conducted soil experiments. 23. 1975. Viking 2 Orbiter/Lander. US. Success. Returned 16,000 images and extensive atmospheric data and soil experiments. 24. The primary mission objectives were to obtain high resolution images of the Martian surface, characterize the structure and composition of the atmosphere and ...Feb 24, 2020 · However, past experiences with individual Apollo, Viking and Earth observations informed the design of the mission, so that information about the seismicity of Mars can be gleaned regardless.Jul 20, 2016 · Gil Levin. Forty years ago today, the first of two landing probes of NASA’s Project Viking touched down on planet Mars. Discover contributor Dr. David Warmflash spoke with Dr. Gilbert Levin ...Sep 26, 2023 · Temperatures on Mars can range from -284 degrees F to 86 degrees F. The atmosphere on Mars is 96% carbon dioxide. One day on Mars lasts about 37 minutes longer than an Earth day. A year on Mars is almost twice as long as a year on Earth. Gravity on Mars is about one-third of the gravity on Earth.The primary mission objectives were to obtain high resolution images of the Martian surface, characterize the structure and composition of the atmosphere and …Planning for a robotic landing on Mars began at once. By 1966, the basic design of the Viking mission existed under the project name Voyager (later re-used for ...Feb 24, 2020 · However, past experiences with individual Apollo, Viking and Earth observations informed the design of the mission, so that information about the seismicity of Mars can be gleaned regardless.Jan 1, 2023 · Nasa Viking Mission मंगल ग्रह पर नासा का वाइकिंग मिशन | Viking Mission Life Discovery on Mars 1976 तक वैज्ञानिको को मंगल ग्रह के Surface , Soil Composition और Geography के बारे में बेहद ही कम जानकारी मौजूद थी हमें तब ...Feb 11, 2021 · The Viking success. The first successful landing on Mars came on July 20, 1976, when NASA's Viking 1 lander touched down in Chryse Planitia (The Plains of Golf). The massive 1,270-lb (576-kilogram ...Mar 16, 2022 · combination of parachutes and rocket engines for landing was successfully used on the Viking Landers. The 1997 Mars Pathfinder mission used parachutes and rocket engines and an additional inflatable airbag system for a bouncing and rolling landing. Human Mars missions have been planned and analyzed since the 1950’s and continue … Viking, either of two robotic U.S. spacecraft launched by NASA for extended study of the planet Mars. The Viking project was the first planetary exploration mission to transmit pictures from the Martian surface. model of Viking 1. Model of the Viking 1 lander on Mars. Viking 1 landed in Chryse Planitia on July 20, 1976. Viking landed on Mars July 2O, 1976. Viking 2 landed on Sept. 3. The primary mission ended in early November. The extended mission began in mid-December and is expected to run through May 1978. NOTE: G. Calvin Broome of NASA's Langley Research Center is Viking mission director during the extended mission …Feb 16, 2021 · Credit: NASA/JPL-Caltech. About 3.9 billion years ago, a wayward rock slammed into Mars, punching a 45-kilometre-wide hole into its surface. On 18 February, NASA plans to land its latest rover ...Nov 13, 2020 · Viking 2 view of the Martian satellite Deimos taken from 500 km distance. Deimos is about 8 km across at its widest part. Note the smoother appearance of the craters, caused by partial burial in dusty regolith. This Viking 2 image shows the surface of Deimos from a distance of 30 km. Features as small as 3 meters across can be seen.Mars. Viking Mission Briefing. June 7, 1976. The NASA press room for the Viking Mars landing mission will open Monday, June 14, in the von Karman auditorium at the Jet …The primary objectives of the two Viking orbiters were to transport the landers to Mars, perform reconnaissance to locate and certify landing sites, act as communications relays for the landers, and to perform their own scientific investigations. Each orbiter, based on the earlier Mariner 9 … See moreContents. This Viking 1 image is one of first images of a sunset as seen from the surface of Mars. The image shows the Chryse Planitia region of Mars about 15 minutes before sunset on Aug. 21, 1976. The camera is pointed southwest and the Sun is at an elevation angle of 3 or 4 degrees above the horizon and about 50 …4 days ago · Viking Mars. Viking Mars set off on her maiden voyage in 2022 and with 39 unique cruise itineraries lined up around the world this season, each of her 930 passengers will experience understated elegance, modern Scandinavian design, verandas from every cabin and a ship engineered at a scale that allows direct …The Viking Project -- today with fewer than 30 people engaged in flight operations and science data processing -- is managed for NASA's Office of Space Science by Jet Propulsion Laboratory. 818-354-5011. 1980-0940. After more than four years exploring Mars, NASA's Viking Orbiter 1 has almost reached the end of its mission.Oct 13, 2023 · The Viking Mars mission was performed by two spacecraft, Viking 1 launched on August 20, 1975, and Viking 2, launched September 9, 1975. Each spacecraft consisted of an orbiter and a lander, which traveled attached together for nearly a year to reach Mars orbit. The landers then separated from the orbiters … The Viking mission was planned to continue for 90 days after landing. Each orbiter and lander operated far beyond its design lifetime. Viking Orbiter 1 continued for four years and 1,489 orbits of Mars, concluding its mission August 7, 1980, while Viking Orbiter 2 functioned until July 25, 1978. Because of the variations in available sunlight ... Apr 2, 2019 · Viking launched in 1975 and landed on Mars in 1976. What was that like? I went out to [the Jet Propulsion Laboratory (JPL) in] California for the landing and half expected it to crash.Sep 3, 2010 · The Viking mission was planned to continue for 90 days after landing. Each orbiter and lander operated far beyond its design lifetime. Viking Orbiter 1 functioned until July 25, 1978, while Viking Orbiter 2 continued for four years and 1,489 orbits of Mars, concluding its mission August 7, 1980. Because of the …Jul 21, 2016 ... “NASA's Viking 1 and 2 missions to Mars, each consisting of an orbiter and a lander, became the first space probes to obtain high resolution ...
About the mission. Viking 2 landed on Mars in September 1976 -- immediately following the first successful spacecraft landing on Mars by Viking 1 -- and …. Parking permits dc
Countries involved in successful missions to Mars include the United States, Russia (formerly the USSR) and India. In addition to these countries, Japan and China launched several ...The primary mission of the Viking project, with two orbiters and two landers at Mars, was completed in November 1976, but operations have since been extended in a series of stages, and they are still continuing as of November 1979. ... This paper discusses the operation and chronology of the Viking mission. The scientific … Learn more about the Viking mission, the first U.S. project to land and operate spacecraft on the surface of Mars, in this comprehensive press kit from NASA. The pdf document covers the objectives, design, launch, and results of the Viking orbiters and landers, as well as the scientific discoveries and legacy of the mission. Jul 22, 2006 · The first Viking lander touched down on Mars 30 years ago this week. We look back at the Mars Viking missions with Joel Levine, senior research scientist at NASA's Langley Research Center.Jan 30, 2023 · The Viking Mission began on August 20, 1975 when Viking 1 took off aboard a Titan/Centaur launch vehicle from Cape Canaveral, Florida. It took 11 months to travel to Mars.Jul 20, 2016 ... The Viking mission was a huge success from an engineering perspective, an 11-month journey through space to a perfect landing on another planet.Feb 16, 2021 · Credit: NASA/JPL-Caltech. About 3.9 billion years ago, a wayward rock slammed into Mars, punching a 45-kilometre-wide hole into its surface. On 18 February, NASA plans to land its latest rover ...Feb 24, 2020 · However, past experiences with individual Apollo, Viking and Earth observations informed the design of the mission, so that information about the seismicity of Mars can be gleaned regardless.On July 20, 1976, it became the first spacecraft to land successfully on Mars and perform its mission. Viking 1 held the record for the longest Mars surface ...Sep 30, 1977 · Temperatures observed during the Viking primary mission range from 130 to 290 K. Surface thermal inertias from 1.6 to 11×10 −3 cal cm −2 s −1/2 K −1 are mapped, and they correlate with surficial geologic units. An equatorial map of bolometric albedo generally correlates with prior narrowband observations.Mar 10, 2024 · Viking 1. August 20, 1975 [1] Last launch. Viking 2. September 9, 1975 [2] The Viking program was a NASA mission that sent two spacecraft to the planet Mars. These spacecraft were called Viking 1 and Viking 2. [3] Each spacecraft was made of an orbiter and a lander. The orbiters took pictures of Mars from their orbit and sent information to …The primary mission objectives were to obtain high resolution images of the Martian surface, characterize the structure and composition of the atmosphere and … Viking Mars. Expand your horizons on our award-winning, all-veranda small ship, with just 930 guests, allowing us to dock where larger ships cannot. Only 930 guests. Length: 745 feet. Beam: 94 feet. Class: small ships. Year built: 2022. Both NASA Viking missions used a combination of orbiter and lander to explore Mars in unprecedented detail. Viking 2 entered orbit around Mars on Aug. 7, 1976. The lander touched down safely on Sept. 3, 1976, about 4,000 miles (6,460 kilometers) from the Viking 1. ... Viking 2 entered orbit around Mars nearly a year after launch …Oct 10, 2019 ... I'm Convinced We Found Evidence of Life on Mars in the 1970s - The Labeled Release experiment on the Viking mission reported positive results, ...Forty years ago today (July 20), NASA's Viking 1 Mars lander became the first American spacecraft to touch down safely on the Red Planet. ... Andrew Chaikin served on the Viking missions at JPL ...Model of Viking Lander. The Viking Program consisted of a pair of American space probes sent to Mars, Viking 1 and Viking 2. Each spacecraft was composed of two main parts: … Viking Update. Jan. 26, 1977. NASA's Mars Exploration Program includes two active rovers and three active orbiters. Concept studies have begun for a potential future Mars orbiter mission. › Full image and caption. Credit: NASA/JPL/USGS. Viking project officials have completed the first in series of three maneuvers with Viking Orbiter to fly ... The Viking Project -- today with fewer than 30 people engaged in flight operations and science data processing -- is managed for NASA's Office of Space Science by Jet Propulsion Laboratory. 818-354-5011. 1980-0940. After more than four years exploring Mars, NASA's Viking Orbiter 1 has almost reached the end of its mission.Dec 5, 1997 · Only the tip of North Knob, which appears larger in the Viking orbiter images than the Twin Peaks, projects above the local horizon, and a 300-m crater, 1.2 km to the northeast, is completely obscured. Viking stereo images 004A27 and 004A87 and 004A44 and 004A70. North is up; scale bar, 5 km. (Insets) (Upper … Viking 2 will orbit Mars on August 7 with the landing scheduled for September 4. The Viking mission is conducted by the Langley Research Center, Hampton, VA. JPL is responsible for the Orbiter spacecraft and tracking and communications. Martin Marietta, Denver, Colorado, is responsible to Langley for the Lander. 818-354-5011. .