About: http://webisa.webdatacommons.org/271285454

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	Taken together, the crew has to look at a mission lasting 75 yrs or more subjective time, one way as the most probably scenario if we are to launch this in the next 100 years ( baring new physics) .
http://www.w3.org/ns/prov#wasQuotedFrom	centauri-dreams.org