Theia's impact with the Earth created the Moon — and perhaps left some shrapnel behind.
. Scientists previously suspected there was a link between the blobs, formally known as large low-shear velocity provinces , and the Moon, but most thought the LLSVPs were planetary scars from Theia's impact, not pieces of the alien world itself.To be fair, this isn't the first time that scientists have speculated that the underground blobs were remnant shards of Theia,at last week's Lunar and Planetary Science Conference, seems to have made the most compelling case yet.
"I think it’s completely viable until someone tells me it’s not," Arizona State seismologist Edward Garnero, who didn't work on the study, toldThe smoking gun in Yuan's work, as it were, is seismological evidence that the LLSVPs are chemically different from the rest of the mantle rock that surrounds them.
Even though the research remains somewhat speculative, seismologists emboldened by studies like Yuan's are increasingly convinced that other pieces of otherworldly shrapnel could also be hiding beneath the Earth's surface, according to. Uncovering them, they suspect, could help reveal that Earth's ancient past was far more violent than what we know so far.
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