About: http://webisa.webdatacommons.org/251981434

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	They are not planets.) Much of this interstellar material becomes concentrated in giant molecular clouds such as the Orion Nebula, one of the most massive objects in the Galaxy.
http://www.w3.org/ns/prov#wasQuotedFrom	princeton.edu