On August 30, NASA's Perseverance rover recorded a Martian dust devil cruising from east to west at a speed of approximately 12 mph (19 kph) near "Thorofare Ridge." The video, composed of 21 frames captured at four-second intervals, was accelerated 20 times to emphasize intricate details.
The rover, acting as a scientific explorer, observed this phenomenon as part of its mission to study the Martian atmosphere within the Jezero Crater.
In this handout image provided by NASA, the first high-resolution, color image to be sent back by the Hazard Cameras (Hazcams) on the underside of NASA’s Perseverance Mars rover after its landing in the area known as Jezero crater on February 18, 2021 on the planet Mars.
Martian Whirlwind Captured Moving East to West
NASA's Perseverance rover recorded the footage of a Martian dust devil during the 899th Martian day of its mission using one of the rover's Navcams.
Dust devils, while less powerful and smaller than Earth's tornadoes, play a significant role in transporting and redistributing dust across the Martian landscape. Scientists study them to gain a deeper understanding of the Martian atmosphere and enhance their weather models.
This specific dust devil was located approximately 2.5 miles away at a site known as "Thorofare Ridge" and was moving from east to west at a speed of about 12 mph. Its estimated width was around 200 feet, although only the lower 387 feet were visible in the camera frame.
To determine its height, scientists relied on the shadow cast by the dust devil, estimating it to be roughly 1.2 miles tall. Dust devils form when rising pockets of warm air interact with descending columns of cooler air, and on Mars, they can grow much larger than their Earth counterparts.
These events are more frequent during Mars' spring and summer months, yet their appearance at specific locations remains unpredictable. Perseverance is currently in the northern hemisphere of Mars where it is currently summer.
Consequently, Perseverance and NASA's Mars rover Curiosity continually monitor their surroundings for dust devils, capturing images in black-and-white to minimize data transmission to Earth.
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Perseverance Rover Continues Its Mission
The Mars 2020 Perseverance mission has a primary focus on astrobiology, aiming to uncover any signs of ancient microbial life. Beyond this, it's conducting a thorough examination of Martian geology and past climate, all while paving the way for future human missions to the Red Planet.
One of its key tasks is to collect core samples of Mars' rock and soil using a specialized drill, which will then be sealed in tubes for later retrieval by another mission.
Perseverance is also serving as a technology demonstrator, testing critical technologies essential for future human Mars missions. This includes experiments for producing oxygen from the Martian atmosphere, identifying potential resources like subsurface water, refining landing techniques, and studying the Martian environment, including its weather and dust patterns.
Additionally, the rover carries the Mars Helicopter, Ingenuity, which aims to achieve the historic milestone of powered flight on Mars. Looking ahead, NASA and ESA are planning collaborative missions to send spacecraft to Mars to retrieve the sealed samples collected by Perseverance. These samples will be transported back to Earth for extensive analysis.
The mission is part of NASA's broader strategy, known as Moon to Mars exploration. This strategy includes the Artemis missions to the Moon, which serve as critical preparations for eventual human exploration of Mars.
Managing and overseeing the operations of the Perseverance rover is the Jet Propulsion Laboratory (JPL) in Pasadena, California, under the auspices of Caltech on behalf of NASA.
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