SpaceSource of sun's power revealed by ghostly particles The first detection of neutrinos produced by fusion in the sun confirms that our star has been stable for millions of years 51¶¯Âþ
LifeIcy moon explorer gets an Alaska road test Camped on a glacier, Lisa Grossman meets a robot that could pierce the ice of Jupiter's moon Europa and check its hidden ocean for signs of life 51¶¯Âþ