Buckyballs discovered in interstellar space

Compared to deeper cosmological mysteries like the identity of dark matter and dark energy, or what’s going on inside black holes, there are other unknowns that appear more mundane, their solutions seemingly within reach. But, despite appearing to be a tractable problem, one mystery has managed to persist for the almost the entirety of the past century, making it one of the longest-standing problems in astronomy.

About a century ago, researchers observed the telltale signs of...

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