An experimental NASA solar sail can be seen in the night sky as it orbits the Earth ... but instead of being pushed by wind, ...

But as a species we wouldn’t have made it very far if it was only possible to sail in the same direction the wind is blowing. There are a number of methods for sailing upwind, but generally only ...

Weather delays are frustrating for sailors, but having adequate wind is fundamental for the sport of sailing. Every sailor has experienced postponements for either no wind, or sometimes too much wind.