About: http://webisa.webdatacommons.org/282212024

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	Power is always a problem in space, because energy sources such as solar panels and nuclear reactors are heavy and expensive to launch, and spacecraft have limited capacity.
http://www.w3.org/ns/prov#wasQuotedFrom	newscientist.com