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WASHINGTON - Researchers have cracked a mystery at the core of Mercury — and say there's molten fluid inside the tiny planet. They did it by using the same trick as cooks who want to know if an egg is raw or hard-boiled.
The finding helps explain the unexpected discovery several years ago that Mercury has a small magnetic field.
The discovery of the magnetic field by the Mariner 10 spacecraft puzzled scientists, who believed that because of its small size the planet's core had long ago solidified.
But the most common explanation for a magnetic field is a molten interior, such as on Earth. The Moon and Mars, for example, show evidence only of ancient magnetic fields.
The finding helps explain the unexpected discovery several years ago that Mercury has a small magnetic field.
The discovery of the magnetic field by the Mariner 10 spacecraft puzzled scientists, who believed that because of its small size the planet's core had long ago solidified.
But the most common explanation for a magnetic field is a molten interior, such as on Earth. The Moon and Mars, for example, show evidence only of ancient magnetic fields.
Researchers: Mercury has molten fluid inside
WASHINGTON - Researchers have cracked a mystery at the core of Mercury - and say there's molten fluid inside the tiny planet. They did it by using the same trick as cooks who want to know if an egg i…
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