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Mars North Pole Ice Contains Less Dust Than Previously Thought
Confirmed
In Short: Planetary scientists have discovered that the exposed water ice at Mars' north pole contains less than 3% dust, a significant reduction from previous estimates of up to 25%. This finding, based on orbital and lander data, was published in a recent analysis.
Planetary scientists have discovered that the exposed water ice at Mars' north pole contains less than 3% dust, a significant reduction from previous estimates of up to 25%. This finding, based on orbital and lander data, was published in a recent analysis.
According to Dr. Aditya Khuller, a researcher at the University of Washington, the brightness changes over time helped determine the dust content. 'We figured out that there is a frost that forms in the winter and it’s more dusty,' Khuller explained, noting that this frost disappears in the summer, revealing cleaner ice beneath.
The study, which utilized data from NASA’s Mars Reconnaissance Orbiter and ESA’s Mars Express, as well as the Phoenix lander, suggests that the north pole ice is layered like an ice-cream sandwich, with dustier ice between slabs of cleaner ice.
This revised dust content and grain size of exposed water ice at Mars' north pole could have implications for understanding the planet's climate history and the processes that shape its surface.
In related space exploration news, researchers studying Mars' orbit and shape changes have identified a warm spot near the planet's north pole. This spot, observed over 16 years by multiple orbiters, may provide clues about heating inside the planet and its internal evolution.
Nick Wagner, a postdoctoral researcher at Brown University, explained that as Mars orbits the Sun, the Sun's gravity stretches and squeezes the planet, causing slight changes in its shape. 'As Mars travels around the Sun, the Sun’s gravity gently stretches and squeezes the planet,' Wagner said.
The warm spot could be a result of tidal forces and could indicate deep-seated volcanic activity or magma production within Mars.
These findings contribute to a broader understanding of Mars' thermal models and internal processes, potentially shedding light on the planet's long-term changes.
In wrestling news, WWE's NXT brand is set to bring back the Dusty Rhodes Tag Team Classic, a tournament named after the late WWE Hall of Famer Dusty Rhodes. The event, which will begin next week, promises to add new storylines and opportunities for tag teams in the NXT division.
What this adds
The warm spot near Mars' north pole could result in thickening and enhanced magnetization across Mars's southern highlands, according to the Byrnes team's paper.
What's confirmed
- As of this writing, the competitors in the 2026 Dusty Rhodes Tag Team Classic have yet to be revealed. The official brackets are expected to be dropped on social media later this week, however. The tournament action itself will begin next week with two opening round matches. The most recent tag team tourney saw Bron Breakker and Baron Corbin defeat Trick Williams and Carmelo Hayes in the finals. Breakker and Corbin, together known as the WolfDogs, then went on to capture the NXT Tag Team Championships shortly after. The classic, named after the late WWE Hall of Famer Dusty Rhodes, first launched in 2015. The Creed Brothers, who recently returned to the "NXT" brand, won the 2022 iteration.
What's still developing
- What the data show are the effects of seasonal tidal forcing as Mars orbits the Sun.
- That upwelling could result in thickening and enhanced magnetization across Mars's southern highlands.
- Their results differ sharply from some earlier works: an analysis of Mars Express data from Korolev crater, for example, had implied dust contents of about 15-22% by mass; the new study finds roughly 0.2-0.4% in the top layer for the same observations.
- The Dusty Rhodes Tag Team Classic is returning to "WWE NXT." "NXT" General Manager Robert Stone confirmed as such on Tuesday night, making good on his promise recently heard at "NXT" Heatwave.
- Whether or not the women's edition of the Dusty Rhodes Classic will return this year as well has yet to be seen.
- That gives WWE several different stories to work with on September 22, including the start of the Dusty Classic, fallout from the women’s division brawl and another chance for Zilla Fatu to make an impact on NXT television.
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