... ESO, the European Southern Observatory . ... Travel and Contacts . ... Survey Telescopes . ... Quasars and Black Holes . ... Stars@ESO . ... The inky areas are small parts of a huge dark nebula known as the Coalsack, one of the most prominent objects of its kind visible to the unaided eye. ... As the stray material in the Coalsack coalesces under the mutual attraction of gravity, stars will eventually light up, and the coal БЂњnuggetsБЂќ in the Coalsack will "combust", almost as if touched by a...