Astronauts repair cosmic ray detector outside International Space Station

Spacewalking astronauts attached new pumps to a cosmic ray detector outside the International Space Station on Monday in a bid to extend its scientific life. It was the third spacewalk in nearly three weeks for Italy’s Luca Parmitano and NASA’s Andrew Morgan. And it marked the culmination of years of work to repair the $2 billion Alpha Magnetic Spectrometer. More

(Source: MarketWatch - Dec 3)