It's not a trick question. Or is it? 🌏 engineering
contradicts this by saying that it is unlikely to be solid and contains many lighter elements in it.
Like many other things in our solar system, our own planet, Earth is filled with many mysteries that we are yet to unravel. Among them is the core of the Earth that has been attributed to many functions and has also been the subject of many queries from scientists but with its ultra-high temperatures and pressure, completely inaccessible to researchers to sample and study. Geologists have been using earthquake data to understand what is happening under the Earth's crust.
While this is something that other geologists have also suggested in the past, the recent study goes a step further to characterize the state of matter of these lighter elements. According to the research paper, hydrogen, oxygen, and carbon are present in a superionic state along with iron molecules.
According to this model, these elements are neither in their solid-state or liquid state but somewhere in between, called, where the iron maintains a dense hexagonal shape while the lighter elements move about in their liquid forms. The substantial decrease in wave velocities of earthquakes as they pass through the inner core can be attributed to these lighter elements, the researchers note in their publication.
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