About: http://webisa.webdatacommons.org/46786266

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	At sufficiently high altitudes there are simply too few air molecules to effectively scatter sunlight and the sky is therefore mostly devoid of color.
http://www.w3.org/ns/prov#wasQuotedFrom	usra.edu