This image from the APEX telescope, part of the Taurus Molecular Cloud, shows a sinuous filament of cosmic dust more than ten light-years long. Credit: ESO/APEX (MPIfR/ESO/OSO)/A. Hacar et al./Digitized Sky Survey 2. Acknowledgment: Davide De Martin.
This stunning new image shows a sinuous filament of cosmic dust more than ten light-years long. The makeup of filamentary cloud structures like this used to be a mystery, and in the early 20th century, Edward Emerson Barnard compiled a photographic atlas of these features, calling them “dark markings of the sky,” as these regions appeared as dark lanes, with no stars visible. Barnard correctly argued that this appearance was due to “obscuring matter in space.” Today we call segments in this particular cloud Barnard 211 and Barnard 213, or the Taurus Molecular Cloud. And we now know that these are clouds of interstellar gas and dust grains. But also, within these clouds, newborn stars are hidden, and dense clouds of gas are on the verge of collapsing to form yet more stars.
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