About: http://webisa.webdatacommons.org/216683746

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 basic problem for designers of reusable space vehicles is achieving the velocity needed to reach orbit without carrying so much fuel that the vehicle is either too heavy to get there or unable to carry anything other than fuel.
http://www.w3.org/ns/prov#wasQuotedFrom	spacefuture.com