ESA's Herschel infrared space telescope has made an unexpected discovery: a dark hole in space. The hole has provided astronomers with a surprising glimpse into the end of the star-forming process.
A cloud of bright reflective gas known to astronomers as NGC 1999 sits next to a black patch of sky. For most of the 20th century, such black patches have been known to be dense clouds of dust and gas that block light from passing through.
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