Monthly Archives: August 2015

STK Space and Defense Video Challenge

STK Space and Defense Video Challenge

If you’re planning to attend AGI’s 1st International Users Conference, you can enter to win an iPad Mini in the STK Space and Defense Video Challenge! Get creative in STK and develop the coolest scenario you can think of! Submissions will … Continue reading

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Happy National Aviation Day!

Happy National Aviation Day!

Article by Andy Woodcock. Today is National Aviation Day; a United States national observation celebrating the development of aviation. The day itself dates back to a presidential proclamation by FDR in 1939 and marks the Wright Flyer pilot, Orville Wright’s … Continue reading

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Why the Greenwich Meridian Isn’t Where it Used to Be

The Airy meridian at Greenwich (dashed line) and GPS zero longitude (solid line). Imagery © 2014 Google Maps, Infoterra Ltd & Bluesky

Visitors to the “Prime Meridian of the World” at the Royal Observatory in Greenwich are often surprised that their GPS receivers display a longitude of 00° 00’ 05.3’’ W while standing over the meridian line in the pavement outside the Airy Transit Circle telescope. Airy’s Transit … Continue reading

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