Shadow DOM is a web component feature that lets you attach an isolated DOM subtree to any HTML element, hidden from the main document’s standard queries. A querySelector('audio') on the main document cannot see inside a Shadow Root unless you specifically traverse into it. If fermaw’s player was mounted inside a Shadow Root, basic DOM searches would come up empty.
Working with Prof John Plane at the University of Leeds, they detected that the amount of lithium in the atmosphere at around 100km above Earth increased by a factor of 10.
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