Aero Linx: Michigan Business Aviation Association (MBAA) The Michigan Business Aviation Association (MBAA) was founded in 1998 and represents businesses and individuals with a common interest of working towards the preservation and development of an air transportation system including an airport infrastructure and other aviation issues affecting the State of Michigan. The Association is dedicated to the promotion and advocacy of the importance of business air travel to the state’s economy and the importance of sufficient funding to preserve, develop and assure safety at Michigan airports. The Association recognizes the need to improve the understanding and importance of aviation by state and local officials. The

Chandler Wobble A small motion in the Earth's rotation axis relative to the surface, discovered by American astronomer Seth Carlo Chandler in 1891. Its amplitude is about 0.7 arcseconds (about 15 meters on the surface) with a period of 433 days. It combines with another wobble with a period of one year, so the total polar motion varies with a period of about 7 years. The Chandler wobble is an example of free nutation for a spinning non-spherical object.

"The brightness measurements have been puzzling us since two summers ago... While the distribution of brightness was not exactly what we had expected, practically every measurement related to ice and other volatile compounds on the moon is surprising, given the cosmically cold temperatures inside its polar craters." Source: Gregory Neumann of NASA's Goddard Space Flight Center in Greenbelt, MD, a co-author of a paper suggesting that NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft has returned data that indicate ice may make up as much as 22 percent of the surface material in a crater located on the moon's south pole.