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The Military

United States Begins Flying Stealth Bombers Over South Korea 567

skade88 writes "The New York Times is reporting that the United States has started flying B-2 stealth bomber runs over South Korea as a show of force to North Korea. The bombers flew 6,500 miles to bomb a South Korean island with mock explosives. Earlier this month the U.S. Military ran mock B-52 bombing runs over the same South Korean island. The U.S. military says it shows that it can execute precision bombing runs at will with little notice needed. The U.S. also reaffirmed their commitment to protecting its allies in the region. The North Koreans have been making threats to turn South Korea into a sea of fire. North Korea has also made threats claiming they will nuke the United States' mainland."
Mars

4-Billion-Pixel Panorama View From Curiosity Rover 101

SternisheFan points out that there is a great new panorama made from shots from the Curiosity Rover. "Sweep your gaze around Gale Crater on Mars, where NASA's Curiosity rover is currently exploring, with this 4-billion-pixel panorama stitched together from 295 images. ...The entire image stretches 90,000 by 45,000 pixels and uses pictures taken by the rover's two MastCams. The best way to enjoy it is to go into fullscreen mode and slowly soak up the scenery — from the distant high edges of the crater to the enormous and looming Mount Sharp, the rover's eventual destination."
Power

Submission + - Solar Cell Sets World-Record Conversion Efficiency (electricalengineer.com)

asoduk writes: "Researchers at DOE's National Renewable Energy Laboratory (NREL) have developed a solar cell that can convert a record 40.8% of the sunlight that hits it into electricity. The new NREL solar cell is a triple-junction device, which means it uses three layers of photovoltaic material stacked atop one another to catch different parts of the solar spectrum. Sunlight that isn't converting into electricity by the top layer passes into the lower layers of the solar cell, which convert more of the sunlight into electricity, boosting the cell's conversion efficiency. The cell is unique in that it is grown in an inverted order, from the top down, and is then removed from the substrate it is grown on to produce a lightweight, flexible film."

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