NASA satellites ace world's 1st 'lost-in-space' GPS-free navigation experiment

No GPS available in space? A satellite experiment may have a solution for that.NASA's Starling mission — made up of a swarm of four cubesats in low Earth orbit (LEO) — is testing out navigation by using other satellites as moving landmarks. The hope is that this tech will allow future missions to navigate if GPS is not available.The three-year-old tech demo will be extended beyond its previous expiration date this year until at least 2028, NASA announced on Monday (Aug. 17). The aim