PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ion drives are very efficient but very low thrust and they are only effective if solar powered, carrying fuel means you are limited by the rocket equation regardless of the propulsion method.A solar sail can achieve much higher speeds but in all these designs, there is a lot of engineering to be done.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org