PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • s, totally, for far less resource investment, by using some combination of solar sails and solar-powered ion drives to move comets and other elemental resources around in the solar system at solar system velocities, compared to the insane waste of resources of accelerating a ship to 0.1c.While it is not impossible to reach another star at 0.1c, the fact is we are not going to see that done very o
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org