Mercury - Iron heart

When planets begin to form from clumps of dust and gas, planets closer to the sun absorb more iron in their cores than planets farther from the sun.
Sheena

Updated: Jul 20, 2021 01:23:35 pm

20 July 2021 Current Affairs:A study conducted by researchers at the University of Maryland refuted the widespread hypothesis why Mercury’s core has a larger core relative to its mantle (the layer between its core and the crust). 

Highlights:
♦ Scientists had previously argued that hit-and-run collisions with other bodies during the formation of our solar system resulted in the removal of much of Mercury's rocky mantle, leaving behind the large, dense metal core inside. 
♦ But new research shows that the sun’s magnetism is the cause of this situation, not the cause of the collision. 
♦ The researchers created a model that shows how the distance from the Sun's magnetic field affects the density, mass, and iron content of a rocky planet's core.
♦ When the four inner planets of our solar system move away from the sun, the metal content in the core will decrease, which is a gradient
♦ The current study explains this by demonstrating that the magnetic field of the Sun influenced the distribution of raw materials in the early solar system.
♦ The new model demonstrates that during the early stages of our solar system's formation, when the young Sun was surrounded by a swirling cloud of dust and gas, grains of iron were drawn toward the Sun's magnetic field.
♦ When planets begin to form from clumps of dust and gas, planets closer to the sun absorb more iron in their cores than planets farther from the sun.
 
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