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About: A Sky Full of Ghosts     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Section106392001, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingschema:CreativeWorkschema:TVEpisodeworkwikidata:Q386724yago:Abstraction100002137yago:AuditoryCommunication107109019yago:Communication100033020yago:Episode106396330yago:Music107020895yago:Writing106362953yago:WrittenCommunication106349220television episodeyago:Section106392001 New Facet based on Instances of this Class

"A Sky Full of Ghosts" is the fourth episode of the American documentary television series Cosmos: A Spacetime Odyssey. It premiered on March 30, 2014 on Fox and on March 31, 2014 on National Geographic Channel. The episode presented an in-depth treatment of black holes, beginning with John Michell's suggestion of the existence of an "invisible star" to the first discovery of a black hole, Cygnus X-1. The episode's title is an allusion to how light from stars and other cosmic objects takes eons to travel to Earth, giving rise to the possibility that we might be viewing objects that no longer exist.