Traces of "ghost planet" appear everywhere on Earth?

(NLDO) - Seismic waves suggest new "ultra-low velocity zones" have just been recorded. That could be a sign of the "ghost planet" Theia.

Scientists have previously found two strange structures resembling supercontinents growing from the core-mantle boundary and rising high into the Earth's mantle. They believe they are the remains of a planet that was "eaten" by the early Earth.

Such structures are known as "ultra-low velocity zones" (ULVZs), which are detected by the unusual slowing of seismic waves as they pass through them.

Large fragments of a hypothetical planet could still be intact beneath your feet, no matter where you are standing in the world - AI illustration: Anh Thu

Now, a new study shows there aren't just two ULVZs. They're everywhere in the mantle.

According to Live Science , a new study used data from 58 deep earthquakes with magnitudes above 5.8 (on the U.S. Moment scale) that occurred between 2008 and 2022 near New Guinea.

Waves from these earthquakes travel through the planet's core and up to North America, where they are recorded by EarthScope, a project that deploys mobile seismic monitoring devices across the United States.

Some of these transplanetary seismic waves will pass through the Western Pacific ULVZ, one of two known ULVZs inside Earth.

But the results published in AGU Advances say they found seismic wave changes even at monitoring stations that received seismic waves that did not pass through the Western Pacific ULVZ.

The path of the studied waves certainly does not pass through the ULVZ beneath Africa.

The only explanation is that other ULVZs exist, where seismic waves can lose up to 50% of their speed as they pass through.

Researchers believe that if they expand their investigation to other monitoring stations on Earth, the "strange signature" will appear in seismic waves everywhere.

According to geophysicist Michael Thorne from the University of Utah (USA), head of the research team, this extreme ULVZ still holds many mysteries and so far, no one has been able to confirm what they are.

However, many scientists are inclined to the hypothesis that the ULVZs are fragments of the "ghost planet" Theia.

This hypothetical planet was about the size of Mars and collided with the early Earth about 4.5 billion years ago, a collision that also sent dust and rocks into orbit, creating the Moon.

The matter of the two planets mixed together but not exactly, and perhaps some large pieces of Theia were scattered somewhere in the Earth's structure.

Because they belong to the body of another planet, with a composition more or less different from that of the Earth, seismic waves change when passing through these planetary fragments, forming ULVZs.

Of course, that's just a hypothesis. But it seems to be getting clearer through new discoveries about ULVZs or research on the Moon.

Source: https://nld.com.vn/dau-vet-hanh-tinh-ma-xuat-hien-khap-noi-tren-trai-dat-196240824072931896.htm