About: http://webisa.webdatacommons.org/411444240

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 observe that space is mostly empty and speculate on the challenges of traveling to other planets.
http://www.w3.org/ns/prov#wasQuotedFrom	utb.edu