the lord of the rings - How on (middle) earth did Eärendil kill a dragon as huge as Ancalagon? - Science Fiction & Fantasy Stack Exchange

We know that Ancalagon was killed by Earendil, but how exactly was he killed? Ancalagon was so incredibly massive and Earendil was just a dude in a ship with some Eagles. This image ↓ isn't canon

What was Earendil's ability that enabled him to defeat Ancalagon

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the lord of the rings - How on (middle) earth did Eärendil kill a

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What was Earendil's ability that enabled him to defeat Ancalagon