About: http://webisa.webdatacommons.org/232861361

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	The reason all our brighter luminaries--the moon, sun, planets, and stars--are spherical is a combination of geometry and gravity.
http://www.w3.org/ns/prov#wasQuotedFrom	discovermagazine.com