21.141 and 41.091 UE Black Brant and Terrier-Improved Orion were launched from Wallops Island, VA on July 10, 2011. The purpose of this mission is to explore, for the first time, the ion-neutral coupling, wind shears, and electrodynamics of the mid-latitude lower ionosphere during the daytime. In particular, it will determine the cause of intense daytime irregularities that are consistently observed in the mid-latitude, ionosphere during the summer. The Principal Investigator is Dr. Robert Pfaff/NASA Goddard Space Flight Center.

For more information on these missions, please visit the following website: http://www.nasa.gov/mission_pages/sunearth/news/rockets-atmosphere.html