Harry Potter fans are going wild after a new detail about his famous "lightning bolt" scar began circulating on the internet.

As basically everyone on the planet knows by now, at the very beginning of JK Rowling's Harry Potter series, a baby Harry is attacked by the evil wizard Voldemort, who's just murdered his parents.

The young wizard miraculously survives the "Killing Curse", but is left with a lightning-shaped scar on his forehead for the rest of his life.

All these years, many of us just kind of figured the lightning shape was the unique stamp of a powerful murder curse gone wrong, given that there's no comparison available — Harry was the first wizard to ever cop an Avada Kedavra curse to the face and live to tell the tale.

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But we were wrong.

Thanks to the important work of the person behind Twitter account @todayyearsold, fans have now discovered that the shape is actually the exact trace of the hand gesture used to cast the "Avada Kedavra" spell.

This one pretty much sums it up:

Among the overwhelmingly surprised responses, there were a few diehard Harry Potter fans who pointed out they'd always known the truth.

Rowling herself is yet to weigh in on the revelation, but given her usual willingness to confirm or deny fan theories on Twitter — it's probably only a matter of time