NASA’s Perseverance rover captured this Martian dust devil moving east to west at a clip of about 12 mph (19 kph) along a location called “Thorofare Ridge” in the Jezero Crater on August 30. Credit: NASA/JPL-Caltech
The six-wheeled geologist spotted the twister as part of an atmospheric exploration of Jezero Crater.
The lower portion of a Martian dust devil was captured moving along the western rim of MarsMars is the second smallest planet in our solar system and the fourth planet from the sun. It is a dusty, cold, desert world with a very thin atmosphere. Iron oxide is prevalent in Mars' surface resulting in its reddish color and its nickname "The Red Planet." Mars' name comes from the Roman god of war.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>Mars’ Jezero Crater by NASAEstablished in 1958, the National Aeronautics and Space Administration (NASA) is an independent agency of the United States Federal Government that succeeded the National Advisory Committee for Aeronautics (NACA). It is responsible for the civilian space program, as well as aeronautics and aerospace research. Its vision is "To discover and expand knowledge for the benefit of humanity." Its core values are "safety, integrity, teamwork, excellence, and inclusion." NASA conducts research, develops technology and launches missions to explore and study Earth, the solar system, and the universe beyond. It also works to advance the state of knowledge in a wide range of scientific fields, including Earth and space science, planetary science, astrophysics, and heliophysics, and it collaborates with private companies and international partners to achieve its goals.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>NASA’s Perseverance rover on August 30, 2023, the 899th Martian day, or sol, of the mission. The video, which was sped up 20 times, is composed of 21 frames taken four seconds apart by one of the rover’s Navcams.
Much weaker and generally smaller than Earth’s tornadoes, dust devils are one of the mechanisms that move and redistribute dust around Mars. Scientists study them to better understand the Martian atmosphere and improve their weather models.
NASA’s Perseverance rover captured this Martian dust devil moving east to west at a clip of about 12 mph (19 kph) along “Thorofare Ridge” on August 30. The video, which was sped up 20 times, is composed of 21 frames taken four seconds apart. It was enhanced in order to show maximal detail. Credit: NASA/JPL-Caltech
Using data from the imagery, mission scientists determined that this particular dust devil was about 2.5 miles (4 kilometers) away, at a location nicknamed “Thorofare Ridge,” and moving east to west at about 12 mph (19 kph). They calculated its width to be about 200 feet (60 meters). And while only the bottom 387 feet (118 meters) of the swirling vortex are visible in the camera frame, the scientists could also estimate its full height.
“We don’t see the top of the dust devil, but the shadow it throws gives us a good indication of its height,” said Mark Lemmon, a planetary scientist at the Space Science Institute in Boulder, Colorado, and a member of the Perseverance science team. “Most are vertical columns. If this dust devil were configured that way, its shadow would indicate it is about 1.2 miles (2 kilometers) in height.”
NASA’s Perseverance rover captured this Martian dust devil moving east to west at a clip of about 12 mph (19 kph) along “Thorofare Ridge” on August 30. This is a wider view, still frame. Credit: NASA/JPL-Caltech
Dust devils, which occur on Earth as well, form when rising cells of warm air mix with descending columns of cooler air. The Martian versions can grow to be much larger than those found on Earth. While they are most prominent during the spring and summer months (Mars’ northern hemisphere, where Perseverance is located, is currently in summer), scientists can’t predict when they’ll appear at a specific location. So Perseverance and its fellow NASA Mars rover Curiosity routinely monitor in all directions for them, taking images in black-and-white to reduce the amount of data sent to Earth.
More About the Mission
A central objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith (broken rock and dust).
In subsequent NASA missions, working with the European Space AgencyThe European Space Agency (ESA) is an intergovernmental organization dedicated to the exploration and study of space. ESA was established in 1975 and has 22 member states, with its headquarters located in Paris, France. ESA is responsible for the development and coordination of Europe's space activities, including the design, construction, and launch of spacecraft and satellites for scientific research and Earth observation. Some of ESA's flagship missions have included the Rosetta mission to study a comet, the Gaia mission to create a 3D map of the Milky Way, and the ExoMars mission to search for evidence of past or present life on Mars.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]”>European Space Agency (ESA), spacecraft would be sent to the Red Planet to collect these sealed samples from the surface and return them to Earth for in-depth analysis.
The Mars 2020 Perseverance mission is part of NASA’s Moon to Mars exploration approach, which includes Artemis missions to the Moon that will help prepare for human exploration of Mars.
Management and operation of the Perseverance rover fall under JPL, which is supervised by the California Institute of Technology (Caltech) in Pasadena, California, on NASA’s behalf.
Source: SciTechDaily
