10 Facts about NASA's Mars 2020 Mission with 23 Eyes to land on Mars
10 Facts about NASA's Mars 2020 Mission with 23 Eyes to land on Mars
The Mars 2020 rover mission is part of NASA's Mars Exploration Program, a long-term effort of robotic exploration of the Red Planet. The Mars 2020 mission addresses high-priority science goals for Mars exploration, including key questions about the potential for life on Mars.
To keep mission costs and risks as low as possible, the Mars 2020 design is based on NASA's successful Mars Science Laboratory mission architecture, including its Curiosity rover and proven landing system.
Launch: July/August 2020
Landing: February 2021
Mission Duration:
At Least One Mars Year (about 687 Earth days)
Mars 2020 rover is built at NASA's Jet Propulsion Laboratory in Pasadena, California.
Current Planning Stage: Pre-Launch Activities
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The mission takes the next step by not only seeking signs of habitable conditions on Mars in the ancient past, but also searching for signs of past microbial life itself.
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The Mars 2020 rover introduces a drill that can collect core samples of the most promising rocks and soils and set them aside in a "cache" on the surface of Mars. A future mission could potentially return these samples to Earth. That would help scientists study the samples in laboratories with special room-sized equipment that would be too large to take to Mars.
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The mission also provides opportunities to gather knowledge and demonstrate technologies that address the challenges of future human expeditions to Mars. These include testing a method for producing oxygen from the Martian atmosphere, identifying other resources (such as subsurface water), improving landing techniques, and characterizing weather, dust, and other potential environmental conditions that could affect future astronauts living and working on Mars.
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The mission is timed for a launch opportunity in July/August 2020 when Earth and Mars are in good positions relative to each other for landing on Mars. That is, it takes less power to travel to Mars at this time, compared to other times when Earth and Mars are in different positions in their orbits.
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The science strategy for NASA's Mars Exploration Program (MEP) is to Seek Signs of Life. The Mars 2020 rover contributes to this strategy, as well as to the Program's four long-term science goals
a- Identify past environments capable of supporting microbial life
b- Seek signs of possible past microbial life in those habitable environments, particularly in special rocks known to preserve signs of life over time
c- Collect core rock and "soil" samples and store them on the Martian surface
d- Test oxygen production from the Martian atmosphere
All relate to the potential of Mars as a place for life. The first three consider the possibility of past microbial life. Even if the rover does not discover any signs of past life, it paves the way for human life on Mars someday. The Mars 2020 rover also conducts other scientific studies related to its four objectives. For example, the rover monitors weather and dust in the Martian atmosphere. Such studies are important for understanding daily and seasonal changes on Mars, and will help future human explorers better predict Martian weather.
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Technologies for Entry, Descent, and Landing
The mission relies on successfully demonstrated technological innovations, especially for entry, descent, and landing (EDL). Like NASA's Curiosity rover (Mars Science Laboratory mission), the Mars 2020 spacecraft uses a guided entry, descent, and landing system.
The Mars 2020 mission landing system includes a parachute, descent vehicle, and an approach called a "skycrane maneuver" for lowering the rover on a tether to the surface during the final seconds prior to landing. This type of landing system provides the ability to land a very large, heavy rover on the surface of Mars in a more precise landing area than was possible before Curiosity's landing.
The Mars 2020 rover adds new entry, descent, and landing (EDL) technologies, such as Terrain-Relative Navigation (TRN). Terrain-Relative Navigation allows the rover to detect and to avoid hazardous terrain by diverting around it during its descent through the Martian atmosphere.
A microphone allows engineers to analyze entry, descent, and landing. It might also capture sounds of the rover at work, which would provide engineers with clues about the rover's health and operations.
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Technologies for Surface Operations
The Mars 2020 rover design is largely based on the engineering design for Mars rover Curiosity. This reliance on a proven system reduces mission costs and risks.
The rover's long-range mobility system allows it to travel on the surface of Mars over a distance of 3 to 12 miles (5 to 20 kilometers).
The rover has a new, more capable wheel design, among other improvements. For the first time, the rover carries a drill for coring samples from Martian rocks and soil. It gathers and stores the cores in tubes on the Martian surface, using a strategy called "depot caching." Caching demonstrates a new rover capability of gathering, storing, and preserving samples. It could potentially pave the way for future missions that could collect the samples and return them to Earth for intensive laboratory analysis.
The Mars 2020 rover helps prepare for future human exploration of Mars with a technology for extracting oxygen from the Martian atmosphere, which is 96 percent carbon dioxide. This demonstration of new technology helps mission planners test ways of using Mars' natural resources to support human explorers and improve designs for life support, transportation, and other important systems for living and working on Mars.
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At the third landing site workshop for the Mars 2020 rover mission on Feb. 8-10, 2017, a team of scientists narrowed down the list of potential places where NASA's Mars 2020 rover may land. Three sites were selected to continue as landing site candidates:
a-Columbia Hills - Mineral springs once burbled up from the rocks of Columbia Hills. The discovery that hot springs flowed here was a major achievement of the Mars Exploration Rover, Spirit.
b-Jezero Crater - Jezero Crater tells a story of the on-again, off-again nature of the wet past of Mars. Water filled and drained away from the crater on at least two occasions. More than 3.5 billion years ago, river channels spilled over the crater wall and created a lake. Scientists see evidence that water carried clay minerals from the surrounding area into the crater after the lake dried up. Conceivably, microbial life could have lived in Jezero during one or more of these wet times. If so, signs of their remains might be found in lakebed sediments.
c-NE Syrtis - Volcanic activity once warmed NE Syrtis. Underground heat sources made hot springs flow and surface ice melt. Microbes could have flourished here in liquid water that was in contact with minerals. The layered terrain of NE Syrtis holds a rich record of the interactions that occurred between water and minerals over successive periods of early Mars history.
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Mars Rover Will Have 23 'Eyes' –
NASA's Mars 2020 mission will have more "eyes" than any rover before it: a grand total of 23, to create sweeping panoramas, reveal obstacles, study the atmosphere, and assist science instruments.
They will provide dramatic views during the rover's descent to Mars and be the first to capture images of a parachute as it opens on another planet.
There will even be a camera inside the rover's body, which will study samples as they're stored and left on the surface for collection by a future mission.
The cameras on 2020 will include more color and 3-D imaging than on Curiosity, said Jim Bell of Arizona State University, Tempe, principal investigator for 2020's Mastcam-Z. The "Z" stands for "zoom," which will be added to an improved version of Curiosity's high-definition Mastcam, the rover's main eyes.
Mastcam-Z's stereoscopic cameras can support more 3-D images, which are ideal for examining geologic features and scouting potential samples from long distances away. Features like erosion and soil textures can be spotted at the length of a soccer field. Documenting details like these is important: They could reveal geologic clues and serve as "field notes" to contextualize samples for future scientists.
A Snapshot of Some Mars 2020 Cameras
Enhanced Engineering Cameras: Color, higher resolution and wider fields of view than Curiosity's engineering cameras.
Mastcam-Z: An improved version of Curiosity's MASTCAM with a 3:1 zoom lens.
SuperCam Remote Micro-Imager (RMI): The highest-resolution remote imager will have color, a change from the imager that flew with Curiosity's ChemCam.
CacheCam: Will watch as rock samples are deposited into the rover's body.
Entry, descent and landing cameras: Six cameras will record the entry, descent and landing process, providing the first video of a parachute opening on another planet.
Lander Vision System Camera: Will use computer vision to guide the landing, using a new technology called terrain relative navigation.
SkyCam: A suite of weather instruments will include a sky-facing camera for studying clouds and the atmosphere.
Routinely using 3-D images at high resolution could pay off in a big way," Bell said. "They're useful for both long-range and near-field science targets."
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Photo Mars 2020 23 Cameras
Photo Mars 2020 Landing Site
Source – Nasa
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Wednesday, November 1, 2017
Tags – NASA Mars Mission 2020
