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Reading: Moon could also be a lot older than thought due to ‘remelting’ floor
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Michigan Post > Blog > Tech / Science > Moon could also be a lot older than thought due to ‘remelting’ floor
Tech / Science

Moon could also be a lot older than thought due to ‘remelting’ floor

By Editorial Board Published December 18, 2024 3 Min Read
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Moon could also be a lot older than thought due to ‘remelting’ floor

The moon could also be a lot older than beforehand thought, in keeping with a brand new examine.

Planetary scientists imagine the moon’s floor might have “remelted” round 4.35 billion years in the past, masking a lot older lunar options beneath.

The moon is assumed to have shaped when Earth collided with a Mars-sized protoplanet, a rock within the early phases of turning into a planet. That collision was the final big impression in our planet’s historical past.

Scientists estimated the date of the collision by relationship moon rock samples.

These samples had been assumed to have crystallised from the moon’s historical magma ocean that existed after the impression. They positioned the moon’s age at roughly 4.35 billion years outdated.

Nonetheless, in a examine revealed in Nature, Professor Francis Nimmo from the College of California Santa Cruz and his colleagues argue the moon could also be a lot older.

In accordance with their modelling, the moon went by way of a interval of heating and cooling the place its floor remelted.

This is able to imply the rock samples might be from a a lot precedent days however their “remelted” surfaces are hiding older options.

By finding out thermal fashions and craters on the moon and the age of sure minerals, Prof Nimmo and the workforce now recommend the moon might be as much as 4.51 billion years outdated, multiple and a half million years older than beforehand thought.

Their analysis may additionally clarify why there are fewer craters on the moon’s floor than could be anticipated after it was bombarded about 4 billion years in the past by asteroids.

In accordance with the examine, the craters would have been erased when the moon heated up.

There’s big curiosity within the moon in the meanwhile, as nations race to its south pole the place it’s believed there could also be water.

NASA plans on constructing bases on the moon’s south pole to assist people get to Mars, though it not too long ago delayed its Artemis launch that may have despatched a crew looping across the moon subsequent yr.

TAGGED:Moonolderremeltingsurfacethought
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