They complete risky mission on international space station
                                
                                
                                    (Newser) -
                                    Two astronauts fixed the broken solar panel on the international space station today in one of the riskiest spacewalks ever undertaken, the AP reports. Scott Parazynski installed a brace and fixed snarled wires on the highly electrified panel, which then unfurled to its full length. "Excellent work guys, excellent,...