homehome Home chatchat Notifications


Martian dust devil seen skipping across the red planet

Researchers had to process the images to make this impressive dust devil really stand out.

Tibi Puiu
September 1, 2020 @ 7:59 pm

share Share

Martian dust devil recorded by Curiosity rover at Gale Crater on Sol 2847. Credit: NASA/JPL.

Although Mars’ atmosphere is 100 times thinner than Earth’s, that doesn’t mean that it isn’t just as complex and dynamic in many regards. Mars has cyclonic storms, clouds, seasons, and — as NASA recently illustrated in a fantastic video — dust devils.

This one-of-a-kind footage was recently recorded by Curiosity rover’s Mastcam at Gale Crater. It shows a Martian dust devil casually moving from the left of the frame towards the right.

Seeing the same atmospheric phenomena common on Earth on another planet in such detail is both fascinating and scientifically valuable. Right now, Gale Crater is in its “windy season” and recordings like this can help scientists better understand how atmospheric movements affect Mars’ climate.

Dust devils on Mars form under the same conditions as in Arizona’s desert. These rotating columns of air pick up dust and debris typically on clear summer days when the ground is very hot. The hotter part of the ground heats the air directly above it, whose temperature becomes higher than the surrounding air, so it rises, punching through the cooler air above and creating a vertical column of warm, rising air. If there is a gust of wind, the arrangement is blown sideways.

On Earth, dust devils are pretty small ranging in height from 10 to 100 feet. But in 2012, NASA caught an amazing dust devil that was half a mile tall, and 100 feet wide. It was far from the biggest — dust devils were recorded in the several miles high range.

This particular dust devil recorded on Sol 2847 (a ‘sol’ is a day on Mars) was active for just 5 minutes but the video was fast-forwarded to span just a couple of seconds.

Because they’re much more powerful than on Earth, dust devils on Mars are thought to play an important role in the planet’s climate. These transport vast amounts of fine particles of dust from the surface to the upper atmosphere. The dust alters the albedo or reflectiveness thereby directly influencing the temperature on the surface of Mars.

“These give us the most information about dust devils, such as where they initiate, how they evolve, and how much variety there is in size, dust-content, and duration. Looking at how fast they’re moving and in what direction also tells us about the background wind speed and direction at their location,” Claire Newman, Atmospheric Scientist at Aeolis Research, wrote in a NASA blog post.

share Share

Archaeologists Uncover Creepy Floor Made From Bones Hidden Beneath a Medieval Dutch House

Archaeologists uncover a mysterious flooring style in the Netherlands, built with cattle bones.

How Hot is the Moon? A New NASA Mission is About to Find Out

Understanding how heat moves through the lunar regolith can help scientists understand how the Moon's interior formed.

This 5,500-year-old Kish tablet is the oldest written document

Beer, goats, and grains: here's what the oldest document reveals.

A Huge, Lazy Black Hole Is Redefining the Early Universe

Astronomers using the James Webb Space Telescope have discovered a massive, dormant black hole from just 800 million years after the Big Bang.

Did Columbus Bring Syphilis to Europe? Ancient DNA Suggests So

A new study pinpoints the origin of the STD to South America.

The Magnetic North Pole Has Shifted Again. Here’s Why It Matters

The magnetic North pole is now closer to Siberia than it is to Canada, and scientists aren't sure why.

For better or worse, machine learning is shaping biology research

Machine learning tools can increase the pace of biology research and open the door to new research questions, but the benefits don’t come without risks.

This Babylonian Student's 4,000-Year-Old Math Blunder Is Still Relatable Today

More than memorializing a math mistake, stone tablets show just how advanced the Babylonians were in their time.

Sixty Years Ago, We Nearly Wiped Out Bed Bugs. Then, They Started Changing

Driven to the brink of extinction, bed bugs adapted—and now pesticides are almost useless against them.

LG’s $60,000 Transparent TV Is So Luxe It’s Practically Invisible

This TV screen vanishes at the push of a button.