SpaceSpace cubed: Dawn of the nano-sats Can't afford a Curiosity? Fleets of tiny, cube-shaped spacecraft modules could provide a cheaper ticket to explore the cosmos Features
TechnologyFlickering lights help smartphones keep time Devices could regulate their internal clocks by synchronising to the frequency of mains electricity, revealed in the flicker of fluorescent lights ¿ìè¶ÌÊÓÆµ