Abstract
The notion that the interstellar dust may contain carbyne receives support from the recent discovery of that substance in carbonaceous chondrites. A second discovery, that carbyne can be synthesized at low temperatures and in environments which are not particularly rich in carbon, substantially increases the number of possible astronomical sources of carbyne dust. Although no spectroscopic data have been published for carbyne, its structure suggests that it could be the carrier of certain unidentified spectral features associated with the interstellar dust.

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