In the belly of the Earth there is a 'hell' born from another planet

The Ultra Low Velocity Zone (ULVZ) is a strange region deep inside the Earth, near the core, where seismic waves inexplicably slow down as they pass. Planetary scientists have been trying to figure out what it is for years.

Hypothetical collision between Earth and Theia

Seismologist Surya Pachhai from the Australian National University, who was part of the research team, said their new models suggest that the ULVZ may have been formed by a region that is chemically heterogeneous compared to other parts. of the region near the core, originating early in Earth's history.

According to Science Alert, it was the collision between Earth and the hypothetical planet Theia, more and more evidence that it was real. Theia, about the size of Mars, collided violently with the early Earth and then mixed the material into the Earth. Some of the material ejected from the explosion flew into Earth's orbit, over the years condensing into the Moon.

In the new study, the authors ran hundreds of thousands of computer simulations, using a process called "Bayesian inversion" to find lost history, then matched it with actual data captured from below the Coral Sea between Australia and New Zealand.

They realized that the ULVZ could be a heterogeneous material from the hypothetical planet Theia, which has not been mixed well with the Earth material. The collision even formed an ocean of molten magma with a different chemical composition, then this hellish ocean also sank deep into the Earth's heart and became part of the mysterious ULVZ world.

This is quite consistent with the previously popular hypothesis that ULVZ is molten magma due to some areas of the mantle being cryptically melted.