Mars Rover Recorded Rare Dust Devil Merger
A camera on the Martian surface captured a large dust devil consuming a smaller one in Jezero Crater.
Updated on Sept. 22, 2026 in Severe Weather
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A NASA Mars rover documented a unique atmospheric event where a 210-foot-wide dust devil absorbed a smaller 16-foot-wide counterpart. The merger, which unfolded over two minutes, was captured in 21 video frames.
Why it matters
The science team designed this imaging experiment to better understand forces within the Martian atmosphere. Dust devils are significant contributors to the planet's environment, accounting for roughly half of the dust in its atmosphere.
The primary dust devil measured at least 1,300 feet tall and traveled west northwest at 2 mph. The event took place 0.6 miles from the rover, which had previously recorded dust devils at Witch Hazel Hill.
The players
NASA
This federal agency is responsible for the U.S. civilian space program and aeronautics research.
Space Science Institute
This private, non-profit organization based in Boulder, Colorado, conducts research in planetary science.
The details
The event occurred when surface air heated up and rose through cooler air to form rotating columns. The merger was captured as the rover operated near the rim of the Jezero Crater.
Timeline
December 2024: The rover began surveying the rim of Jezero Crater.
January 2025: The rover captured images of multiple dust devils.
May 2026: A dust devil appeared in a rover selfie.
September 2026: The dust devil merger occurred.
Seasonal Patterns
This observation extends data collected by the Mars rover imaging experiment regarding atmospheric forces. It follows patterns established during previous missions, such as the record-breaking 12-mile-high dust devil documented at Amazonis Planitia.
There is no direct safety risk to human populations as this event occurred on the surface of Mars. The findings will be used by planetary scientists to refine atmospheric models that describe how dust impacts the climate.
The takeaway
This rare visual documentation highlights the dynamic and unpredictable nature of the Martian surface. Understanding these interactions is essential for mapping how atmospheric dust shifts across the planet.
Further reading
Explore more about Severe Weather events and atmospheric dynamics.
Source note: This article includes information reported by Ecoportal.
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