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Liftoff! Delta IV Launches Next Generation GPS Satellite

October 4, 2012

Want to stay on top of all the space news? Follow @universetoday on Twitter A Delta IV rocket launched from Florida today, sending a next-generation Global Positioning System satellite into orbit. The rocket lifted off at 12:10 UTC with the GPS IIF-3 satellite that will be part of the GPS system that is used by [...]

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Podcast: GPS Navigation

February 10, 2011

The in previous podcast, we talked about the old way navigators used to find their way around the planet; by looking at objects in the sky, and doing some tricky math. The new navigation system, of course, is the Global Positioning System, and it helps you find your spot on the planet with amazing accuracy. [...]

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Celestial Sphere

November 9, 2010

The celestial sphere is an imaginary sphere that surrounds the Earth and acts like the Earth, but has an arbitrarily large radius. It has the same center, axis, and rotation as the Earth. It is used in astronomy and navigation. Conceptually, all objects in the sky are projected onto the celestial sphere. Projecting out from [...]

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Celestial Navigation

October 31, 2010

Celestial navigation, also known as astronavigation, is a method of fixing your position based on the stars. It has developed over over several thousand years to help sailors cross featureless oceans without having to rely on estimated calculations(dead reckoning). Celestial navigation uses angular measurements(sights) taken between a visible celestial body (Sun, Moon, or a star) [...]

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How Does a Compass Work

October 31, 2010

Compasses are some of the oldest navigational tools in history. Since Mankind started to understand more about Navigation they have been crucial to major feats of navigation such as the first transoceanic voyages and the circumnavigation of the globe. None of this would be possible without the aid of the compass in performing navigation calculations [...]

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