Failed star has temperature a tenth of the sun's
                                
                                
                                    (Newser) -
                                    Scientists are over the moon with the discovery of a cold brown dwarf in the Cetus constellation. The star-like body, spotted by a British team using the UKIRT telescope in Hawaii, is the coldest of its kind ever seen, the BBC reports, tipping thermometers at just 800 degrees F, a...