Archive: 06/16/2009

Giant eruption reveals 'dead' star

An enormous eruption has found its way to Earth after travelling for many thousands of years across space. Studying this blast with ESA's XMM-Newton and Integral space observatories, astronomers have discovered a dead star ...

Jun 16, 2009 4.6 / 5 (9) 9

Contemplating excess wind

How much usable energy do wind turbines produce? It is a question that perplexes engineers and frustrates potential users, especially on windless days. A study published this month in the International Journal of Energy provid ...

Jun 16, 2009 3 / 5 (6) 0