Scientists discover massive molecular cloud close to Earth | CNN Named Eos, the cloud of gas would appear huge in the night sky if visible to the naked eye and could shed light on solar system formation.

Astronomers have discovered a massive molecular cloud, named Eos, 300 light-years from Earth. Unlike typical clouds detected via carbon monoxide emissions, Eos is "CO-dark" and was identified through faint far-ultraviolet light emitted by molecular hydrogen.
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