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The Inflation Debate (preview)

Thirty years ago Alan H. Guth, then a struggling physics postdoc at the Stanford Linear Accelerator Center, gave a series of seminars in which he introduced “inflation” into the lexicon of cosmology

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Richard Branson unveils deep-sea submarine plans

LOS ANGELES (Reuters) - Virgin Group founder Richard Branson, known for such exploits as trying to balloon around the world, said on Tuesday he planned to explore the deepest parts of the world's oceans with a jet-like submarine. The 18-foot vessel is capable of descents more than 36,000 feet below the surface, said Branson at a news conference in Newport Beach, California.

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NASA Human Spaceflight Program Lost in Transition

By Adam Mann of Nature magazine NASA should be revitalized "not just with dollars, but with clear aims and a larger purpose," US President Barack Obama said last April, after cancelling the previous administration's under-resourced Constellation programme of rockets and capsules for human space flight. [More]

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What Causes an Airliner to Rupture Mid-Flight (and How Can This Be Prevented)?

The 1.5-meter-long gash that opened up in the upper cabin of Friday's Southwest Airlines Flight 812 from Phoenix to Sacramento will have a deep impact on the nature and frequency of commercial aircraft maintenance. The Federal Aviation Administration (FAA) issued a directive on Tuesday ordering about 175 Boeing 737 aircraft--80 of which are registered in the U.S., most of those operated by Southwest--to be inspected using an electromagnetic device that can identify metal fatigue. [More]

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Russia, U.S. Plan a Nuclear-Powered Space Rocket, Making Mars Mission More Feasible

The Russian federal space agency has revealed that on April 15th, the U.S. and Russia will meet to discuss the development of a future joint nuclear-engine powered rocket project. The announcement was made by agency director Anatoly Perminov, and the joint project will also include other nations with a "high level of reactor manufacturing technology." This list could include France, Britain, Germany, China, and Japan

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