It was before the dawn of recorded history that the first great Age of Sail began. Perhaps along the Nile River, a genius lived who observed the ways of swans and reached a brilliant conclusion. If birds could fluff out their feathers to catch the wind, and drift effortlessly against the current, why couldn’t humans learn the same trick?
KeywordsSolar Radiation Pressure Advance Composition Explorer Solar Sail Astronomical Unit Solar Distance
Unable to display preview. Download preview PDF.