Lasers create five new ‘stars’ in night sky

Many big observatories point a single laser at the sky to measure atmospheric turbulence – the Gemini South telescope has now tested a five-laser system

URL: http://feeds.newscientist.com/c/749/f/10898/s/12820849/l/0L0Snewscientist0N0Cgallery0Claser0Eguide0Estar0DDCMP0FOTC0Erss0Gnsref0Fspace/story01.htm