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As the Earth cools from the inside out, the molten outer core is slowly freezing. This is leading the solid inner core to grow at a rate of approximately 1 millimeter per year. However, scientists now find that the inner core might be melting at the same time. "The standard view has been that the inner core is freezing all over and growing out progressively, but it appears that there are regions where the core is actually melting," said researcher Sebastian Rost, a seismologist at the University of Leeds in England. "The net flow of heat from core to mantle ensures that there's still overall freezing of outer core material and it's still growing over time, but by no means is this a uniform process." As the Earth's interior cools, relatively hot and cold matter churns around inside the planet, a process known as convection. The roiling of material in the core, coupled with the spinning of the Earth, is what generates the planet's magnetic field.
In 2005, Long’s team published a study in the journal Science showing that Earth experienced a period of “solar global dimming” from 1960 to 1990, during which time solar radiation hitting our planet’s surface decreased. Then from the mid-1990’s onward, the trend reversed and Earth experienced a “solar brightening.”
Yes they told me. But why the mother ship looked like a van with people wearing all white driving it was beyond my understanding. Ps baking soda is the anti Christ and people who believe in going commando are related to Hitler
Originally posted by theabsolutetruth
reply to post by pcrobotwolf
tsk..some of us are all escaping on a mothership before it all happens, sheesh, didn't they tell you?
The Earth's inner core is a ball of solid iron about 1,500 miles (2,400 kilometers) wide, about the same size as the moon.
In addition, "there is the general problem that all computer models of the dynamics of the Earth's core can't actually capture the true dynamics, as nobody has sufficient computer power to run models with enough detail in terms of both spatial and temporal resolution," Mound added. "The models produce a lot of the behavior that we observe in the Earth's core, but we can't be certain that we have the dynamics correct."
To see if the core really is melting, "we would need larger arrays of seismometers spread more evenly around the world, particularly in the oceans, which is a technological hurdle," Mound said.