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NASA astronaut Mark Polansky has left the agency. […]

NASA will hold a news conference at 1 p.m. EDT Monday, July 16, to discuss the upcoming August landing of the most advanced robot ever sent to another world. […]

NASA partner Sierra Nevada Corporation (SNC) has completed a successful test of the nose landing gear for its full-scale Dream Chaser engineering flight test vehicle. […]

This computer-simulated image shows gas from a star that is ripped apart by tidal forces as it falls into a black hole. Some of the gas also is being ejected at high speeds into space. Using observations from telescopes in space and on the ground, astronomers gathered the most direct evidence yet for this violent process: a supermassive black hole shredding […]

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Acquired July 9, 2012, this image shows Emilia, a Category 2 hurricane over the eastern Pacific Ocean. […]

More than 30 taiga wildfires burned in the Far East of Russia on July 10, 2012. […]

Acquired July 8, 2012, this image shows Daniel, a Category 2 hurricane, over the eastern Pacific Ocean. […]

The fourth and latest installment in the "Science of Sports" franchise, explores the science, engineering and technology that are helping athletes maximize their performance at the 2012 London Games. More at http://www.nsf.gov/news/special_reports/summer_olympics/index.jsp?WT.mc_id=USNSF_51 This is an NSF News item. […]