Physics

NASA Finds 2012 Sustained Long-Term Climate Warming Trend

NASA scientists say 2012 was the ninth warmest of any year since 1880, continuing a long-term trend of rising global temperatures. With the exception of 1988, the nine warmest years in the 132-year record all have occurred since 2000, with 2010 and 2005 ranking as the hottest years on record.

NASA Participates in Presidential Inaugural Activities Jan. 18-21

NASA will participate in the inauguration of President Obama with several events, including an open house, a star party and a NASA Social; exhibits on the National Mall and at NASA Headquarters; and with two floats and marchers in the inaugural parade.

NASA Issues 2013 Call For Visionary Advanced Technology Concepts

NASA's Space Technology Program is looking for visionary advanced concepts. This year's annual call for NASA's Innovative Advanced Concepts Program (NIAC) is seeking proposals for revolutionary concepts with the potential to transform future aerospace missions. Proposed concepts should enable new missions or significantly improve current approaches to achieve aerospace objectives.

New multi-junction solar cell could break efficiency barrier

U.S. Naval Research Laboratory scientists in the Electronics Technology and Science Division, in collaboration with the Imperial College London and MicroLink Devices, Inc., Niles, Ill., have proposed a novel triple-junction solar cell with the potential to break the 50 percent conversion efficiency barrier, which is the current goal in multi-junction photovoltaic development.

Multi-junction solar cell to break efficiency barrier?

A novel, realistically achievable, lattice-matched multi-junction solar cell design has the potential to break the 50 percent power conversion efficiency.

New clean nuclear fusion reactor designed

Researchers have patented a nuclear fusion reactor by inertial confinement that, apart from be used to generate electric power in plants, can be applied to propel ships. This invention helps solve the problem of contamination risk associated with the generation of nuclear fission power.

Star Wars: What would hyperspace travel really look like?

The sight of the Millennium Falcon making the "jump to lightspeed" is one of the most iconic images from the Star Wars trilogy.

Tree physics limits height and leaf size, study shows

(Phys.org)—Why are the leaves on the tallest trees all about the same size, and why aren't those tall trees even taller? It all has to do with basic scientific principles at work in nature, according to researchers at Harvard University and the University of California, Davis.

NASA Awards Space Launch System Advanced Development Grants

NASA has awarded grants to nine universities for advanced development activities for the nation's next heavy-lift rocket, the Space Launch System (SLS).

NASA, NOAA to Announce 2012 Global Temperature, Climate Conditions Jan. 15

U.S. government climate experts will announce new data on global temperature conditions in 2012 during a news teleconference at 2 p.m. EST Tuesday, Jan. 15. NASA and NOAA scientists will discuss the new results and the year's most significant weather and climate events.

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