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28 September 2026

What happened, followed by the questions it leaves behind

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ENVIRONMENT

Mars Has a Warm Region Inside

A University of Arizona team used tidal tomography to study a heat anomaly in Mars’ southern hemisphere mantle. The subsurface region was estimated to be about 200 to 400 degrees Celsius warmer than the surrounding mantle, and researchers said it may provide clues about the planet’s internal evolution over time.

Illustrative photo · Photo by RDNE Stock project · Pexels

A University of Arizona team led by Alexander Byrne used a technique called tidal tomography to examine a heat anomaly in the southern hemisphere mantle of Mars.

The subsurface region was estimated to be about 200 to 400 degrees Celsius warmer than the rest of the mantle. The warm area may contain information about how Mars has changed over its lifetime.

THE QUESTIONS THIS EVENT LEAVES BEHIND

What measurements were used to estimate the temperature difference?

How deep does the anomaly extend within the mantle?

What alternative explanations for the warm region were considered?

What future observations could test the interpretation?

YOUR QUESTION

Does this story leave you with another question?

Send us the question the report did not answer. It may become the next question IAQ investigates.

GLOBAL CURIOSITY MAP · SEPTEMBER 2026

What Was the World Curious About That Month?

10 places and 10 questions from IAQ's monthly record of Environment curiosity.
Explore the Full Global Curiosity Map

28 September 2026 · 23:39 · 1 sources

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Universe Today — Mars Has a Warm Region Inside

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CITY GUIDE Paris Travel Questions Explore a city through the questions that shape the experience. GLOBAL CURIOSITY Global Curiosity Map See what the world is curious about right now. EVERYDAY LANGUAGE Global Banter Atlas Discover the playful expressions people use around the world. CONNECTED QUESTIONS Question Families Follow questions that belong to the same line of curiosity. HIDDEN MECHANISMS IAQ Lexicon Explore the mechanisms hiding behind everyday questions. SELECTED QUESTIONS Hall of Fame Questions that changed how IAQ looked at something familiar. A THOUGHT FROM IAQ
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Follow the thought back to the question that produced it.
INVESTIGATIONS 007 IAQ Follow questions far enough and they begin investigating each other.
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