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Huge Chunks of Ancient Cosmic Objects May Be Stuck Inside Mars

Seismic data from InSight reveal 4km-wide ancient mantle lumps preserving Mars' violent early history, unlike Earth where plate tectonics recycle the mantle, scientists said.

Summary by Space
Instead of neat, layered structures resembling a smooth slice of Millionaire’s Shortbread, Mars’ mantle is more like a rocky road brownie — chunky, uneven, and filled with ancient debris from its violent beginnings.
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The finding was reported on Thursday, August 28, in a study published by Science magazine The rocky material that impacted Mars is scattered into gigantic pieces along the mantle of the planet, offering clues about the interior of Mars and its ancient past. What appear to be fragments of the aftermath of the massive impacts on Mars that occurred 4.5 billion years ago have been detected in the depths of the planet. The discovery was made thanks t…

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Irish Independent broke the news in Ireland on Thursday, September 4, 2025.
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