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How Much Has Mercury Shrunk?

Summary by Phys.org
What do many baked goods and the planet Mercury have in common? They shrink as they cool. Evidence suggests that since it formed about 4.5 billion years ago, Mercury has continuously contracted as it has lost heat. And somewhat like a fresh-baked cookie or cheesecake, Mercury also cracks as it cools: Thrust faults cut through the planet's rocky surface to accommodate the ongoing shrinking.

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How Much Has Mercury Shrunk?

Mercury is still shrinking as it cools in the aftermath of its formation; new research narrows down estimates of just how much it has contracted.

·Bucharest, Romania
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How much has Mercury shrunk?

What do many baked goods and the planet Mercury have in common? They shrink as they cool. Evidence suggests that since it formed about 4.5 billion years ago, Mercury has continuously contracted as it has lost heat. And somewhat like a fresh-baked cookie or cheesecake, Mercury also cracks as it cools: Thrust faults cut through the planet's rocky surface to accommodate the ongoing shrinking.

·United Kingdom
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How Much Mercury Has It Reduced?

What do many bakery products and the planet Mercury have in common? They shrink as they cool down. Evidence suggests that since its formation about 4.5 billion years ago, Mercury has continuously contracted because it has lost heat. And a little like a cookie or cake to [...]

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Phys.org broke the news in United Kingdom on Wednesday, August 13, 2025.
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