Deliveries of three Pentagon-procured fixed-wing tactical transport aircraft to Yemen's capital of Sanaa in September, coupled with announcements of a newly tendered squadron of light observation planes, marked the culmination of the Obama administration's push to help the Yemeni air force take ownership of an Al Qaeda fight that has become synonymous with American unmanned aerial vehicle technology.
Recent high-profile Yemeni Air Force (YAF) crashes serve as a grim reminder to U.S. officials of how much work remains in preparing Yemen’s air force to pull its own weight in the ongoing battle against al-Qaeda in the Arabian Peninsula (AQAP), which is being carried out largely from the skies via UAV attacks.
"These finding have implications for planetary protection policies for future landed spacecraft," according to the Nature Geoscience report. "Cl-bearing brines are very corrosive and this may have implications on spacecraft design and surface operations."...More
The flight of Apollo 13 in April 1970 was one of the most dramatic events in the history of human spaceflight –- and ultimately one of NASA’s finest hours. For three days, the lives of three astronauts who had been bound for the third lunar landing mission hung in the balance....More
The space shuttle was a magnificent machine, the most capable spaceship ever built. It was also a fragile monster that required an expensive standing army to fly, and punished the slightest inattention to detail in its preparation and operation with fatal results....More