Docked in a river harbour in Warsaw next to coal storage and a rubbish tip, a steel-hulled sailing boat built by a group of homeless Poles is preparing for its maiden voyage. The boat was christened on Saturday with the name “Father Boguslaw” after the priest who initiated the improbable project in 2006 with the […]
Sailing
Sailing among the stars: how photons could revolutionize space flight
A few days from now, a SpaceX Falcon Heavy rocket will lift off from Florida, carrying a satellite the size of a loaf of bread with nothing to power it but a huge polyester “solar sail.” It’s been the stuff of scientists’ dreams for decades but has only very recently become a reality. The idea […]