The new theory has saved countless hours of research and significant material resources.
The discovery of this hidden molten rock layer shows that molten rocks have nothing to do with tectonic plate movements, which cause earthquakes.
Researchers said they found that the inner core's rotation "came to near halt around 2009 and then turned in an opposite direction."
The telescope was not able to capture the whole process up close because the star that was swallowed was 300 million light years away.
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