A heated battle that spread to federal courtrooms and the U.S. Congress ended on Tuesday with the U.S. Air Force clearing Elon Musk’s rocket company SpaceX to fly military and national security satellites.
The U.S. Air Force's X-37B space plane blasted into Earth orbit today, kicking off the robotic vehicle's clandestine fourth mission — as well as the first flight of a tiny solar-sailing spacecraft.
The cheeky Morse code message, meant to deter homophobic Russians, reads, 'This Way if You Are Gay.' Continue reading →
PTSD, a psychological disorder, is linked for the first time with long-term, systemic effects on a basic process such as aging.
DARPA's Extreme Accuracy Tasked Ordnance (EXACTO) program was designed to increase snipers' accuracy by improving their range and reducing the time required to hit a target.
New devices enable soldiers to pinpoint threats and respond intuitively. Continue reading →
The 20-year mission of a U.S. military weather satellite came to an abrupt end last month after a power system temperature spike and an apparent explosion.
It's the fifth-most populous country on the planet as well as Latin America's most influential nation. Just how powerful is Brazil?
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