File:PIA22210-Mars-CuriosityRover-GaleCrater-20171025-annotated.jpg
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描述PIA22210-Mars-CuriosityRover-GaleCrater-20171025-annotated.jpg |
English: NASA - January 30, 2018
https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA22210 related video link => (video (1:53)) Wide-Angle Panorama from Ridge in Mars' Gale Crater Climbing 'Vera Rubin Ridge' provided NASA's Curiosity Mars rover this sweeping vista of the interior and rim of Gale Crater, including much of the rover's route during its first five-and-a-half years on Mars. click here for figure 1 of PIA22210 click here for figure 2 of PIA22210 Climbing "Vera Rubin Ridge" provided NASA's Curiosity Mars rover this sweeping vista of the interior and rim of Gale Crater, including much of the rover's route during its first five-and-a-half years on Mars and features up to about 50 miles (85 kilometers) away. The scene spans from southwest on the left to northeast on the right, combining 16 side-by-side images taken by the left-eye, wider-angle-lens camera of Curiosity's Mast Camera (Mastcam). It has been white-balanced so the colors of the rock materials resemble how they would appear under daytime lighting conditions on Earth. The component images were taken on Oct. 25, 2017, during the 1,856th Martian day, or sol, of the rover's work on Mars. At that point, Curiosity had gained 1,073 feet (327 meters) in elevation and driven 10.95 miles (17.63 kilometers) from its landing site. Mount Sharp stands about 3 miles (5 kilometers) high in the middle of Gale Crater, which spans 96 miles (154 kilometers) in diameter. Vera Rubin Ridge is on the northwestern flank of lower Mount Sharp. The foreground of this panorama shows portions of lower Mount Sharp. The middle distance shows the floor of Gale Crater. Most of the horizon is formed by the crater's rim. The top of the rim is about 1.2 miles (2 kilometers) higher than the rover's position. On the horizon near the center of the image is a glimpse outside of Gale Crater, to a peak about 50 miles (85 kilometers) from the rover. An annotated version, Figure 1, indicates the rover's approximate path since its 2012 landing, identifies some of the sites it has investigated along the way, such as "Yellowknife Bay," "The Kimberley," "Namib Dune" and "Murray Buttes"; and points out other geological features visible in the scene, such as the channel of Peace Vallis, an ancient streambed descending from the crater rim. The relative positions of the labeled features are also mapped on an accompanying orbital view in PIA22208, with two areas color-coded for ease of matching them in the annotated panorama and the orbital view. Figure 2 is a version with a white-line box indicating the smaller area covered in a more-detailed vista (PIA22209) taken from this same rover location by Mastcam's right-eye, telephoto-lens camera. It also includes three scale bars: of 50 meters (164 feet) at a distance of 1,170 meters (1,280 yards) near the base of Mount Sharp; of 1,000 meters (1,094 yards) at a distance of about 23.4 kilometers (14.5 miles) near the base of the crater wall; and of 2 kilometers (1.2 miles) at a distance of about 31.5 kilometers (19.6 miles) at the crest of the rim. Malin Space Science Systems, San Diego, built and operates the Mastcam. NASA's Jet Propulsion Laboratory, a division of the Caltech in Pasadena, California, manages the Mars Science Laboratory Project for NASA's Science Mission Directorate, Washington. JPL designed and built the project's Curiosity rover. More information about Curiosity is online at http://www.nasa.gov/msl and http://mars.jpl.nasa.gov/msl/. --- Vista From Mars Rover Looks Back Over Journey So Far Vera Rubin Ridge on Mars https://www.jpl.nasa.gov/news/news.php?feature=7047 Climbing "Vera Rubin Ridge" provided NASA's Curiosity Mars rover this vista of the interior and rim of Gale Crater, including much of the rover's route since its 2012 landing and features up to about 50 miles away. The left-eye camera of the rover's Mastcam took the component images Oct. 25, 2017. Image Credit: NASA/JPL-Caltech/MSSS › Full image and caption A panoramic image that NASA's Curiosity Mars rover took from a mountainside ridge provides a sweeping vista of key sites visited since the rover's 2012 landing, and the towering surroundings. The view from "Vera Rubin Ridge" on the north flank of Mount Sharp encompasses much of the 11-mile (18-kilometer) route the rover has driven from its 2012 landing site, all inside Gale Crater. One hill on the northern horizon is about 50 miles (about 85 kilometers) away, well outside of the crater, though most of the scene's horizon is the crater's northern rim, roughly one-third that distance away and 1.2 miles (2 kilometers) above the rover. Curiosity Project Scientist Ashwin Vasavada gives a descriptive tour of the Mars rover's view in Gale Crater. The white-balanced scene looks back over the journey so far. Curiosity's Mast Camera, or Mastcam, took the component images of the panorama three months ago while the rover paused on the northern edge of Vera Rubin Ridge. The mission has subsequently approached the southern edge of the ridge and examined several outcrop locations along the way. Last week, the Curiosity team on Earth received copious new images from the rover through a record-setting relay by NASA's MAVEN orbiter -- surpassing a gigabit of data during a single relay session from Mars for the first time in history. The team is preparing to resume use of Curiosity's drill for acquiring powdered rock samples to be analyzed by laboratory instruments inside the rover, more than a year after the most recent of the 15 times the drill has pulled sample material from Martian rocks. Inside an Impact Crater Mount Sharp stands in the middle of Gale Crater, which is 96 miles (154 kilometers) in diameter. "Even though Curiosity has been steadily climbing for five years, this is the first time we could look back and see the whole mission laid out below us," said Curiosity Project Scientist Ashwin Vasavada of NASA's Jet Propulsion Laboratory, Pasadena, California. "From our perch on Vera Rubin Ridge, the vast plains of the crater floor stretch out to the spectacular mountain range that forms the northern rim of Gale Crater." The rover photographed the scene shortly before northern Mars' winter solstice, a season of clear skies, gaining a sharp view of distant details. Curiosity's exact landing spot on the floor of the crater lies out of sight behind a slight rise, but the scene includes "Yellowknife Bay." That's where, in 2013, the mission found evidence of an ancient freshwater-lake environment that offered all of the basic chemical ingredients for microbial life. Farther north are the channel and fan of Peace Vallis, relics of the streams that carried water and sediment into the crater about three billion years ago. Sites such as "Kimberley" and "Murray Buttes" along the rover's route are marked on an annotated posting of the panorama. The Mastcam recorded both a wider version of the scene (from southwest to northeast) with its left-eye, 34-millimeter-lens camera and a more detailed, narrower version with its right-eye, 100-millimeter-lens camera. The site from which these images were taken sits 1,073 feet (327 meters) in elevation above Curiosity's landing site. Since leaving that site, the rover has climbed another 85 feet (26 meters) in elevation. In recent days, the Mastcam has recorded component images for a panorama looking uphill southward toward the mission's next major destination area. That is called the "Clay Unit" because observations from orbit detected clay minerals there. Record Relay The opportunity for some high-volume relay sessions with the MAVEN orbiter is helping the Curiosity team gain a bounty of images and other data this month. Most data from Curiosity, through the years, have been relayed to Earth by NASA's Mars Reconnaissance Orbiter (MRO) and Mars Odyssey orbiter, which fly in nearly circular, nearly polar orbits predictably passing over Curiosity at about the same times every day. MAVEN, for Mars Atmosphere and Volatile Evolution, flies an elliptical orbit varying more than 40-fold from its nearest to farthest point from Mars. This suits MAVEN's science focus on Mars' atmosphere but results in variable coverage for relaying rover data. Usually, MAVEN passes over rover locations when the distance is too large for optimal relays. However, during occasional periods when the low point of its orbit is near Curiosity's location on Mars, the relays can serve exceedingly well. "MAVEN definitely has the potential to move lots of data for us, and we expect to make even more use of it in the future," said JPL's Roy Gladden, manager of NASA's Mars Relay Network Office. The Jan. 22 relay of 1,006 megabits topped the previous record of 840 megabits, also set by MAVEN, but might in turn be bested by other favorable MAVEN relay opportunities in coming days. The rover team intends to put Curiosity's drill to work on Vera Rubin Ridge before proceding to the Clay Unit. Resuming use of the drill requires an enterprising workaround for a mechanical problem that appeared in late 2016 and suspended use of the drill. A motor within the drill that advances the bit relative to stabilizer points no longer operates reliably.The workaround being evaluated thoroughly on a test rover at JPL does not use the stabilizer points. It moves the whole drill forward, with bit extended, by motion of the robotic arm. News Media Contact Guy Webster Jet Propulsion Laboratory, Pasadena, Calif. 818-354-6278 guy.webster@jpl.nasa.gov Laurie Cantillo / Dwayne Brown NASA Headquarters, Washington 202-358-1077 / 202-358-1726 laura.l.cantillo@nasa.gov / dwayne.c.brown@nasa.gov 2018-020 |
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来源 | https://photojournal.jpl.nasa.gov/figures/PIA22210_fig1.jpg |
作者 | NASA/JPL-Caltech/MSSS |
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