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...llelogram of force]] between wind and water which allows sails to propel a sailing ship. ...uses a constant 1.5 ''g'' acceleration spin drive to travel between the [[Solar System]], [[Tau Ceti]] and [[40 Eridani]]. ...

...ship meets waves at a faster rate when sailing against the waves than when sailing along with them. The same goes for sound and light. ...Sun, but a black hole could be a million times heavier than the Sun. See [[solar mass]].</ref> ...

...kiteboarding, kite windsurfing, snow kiting, yacht kiting, freighter-ship sailing, kite boating, and free-flight soaring and jumping. A collection of researc ...ing, and a host of other tasking applications. For CWKPS to compete with [[solar energy]], [[nuclear power|nuclear energy]], [[fossil fuels]], conventional ...

For centuries, spherical trigonometry has been used for locating solar, lunar, and stellar positions,<ref name="Gregory1816">{{cite book|author=Ol ...{cite book|author1=Michael Seeds|author2=Dana Backman|title=Astronomy: The Solar System and Beyond|url=https://books.google.com/books?id=DajpkyXS-NUC&pg=PT2 ...

...r.stanford.edu/AO/dawn-rising.html |title=Heliacal/Dawn Risings |publisher=Solar-center.stanford.edu |access-date=2012-08-17}}</ref> ...re used. These devices allowed sailors to call the hours, and to calculate sailing velocity. ...