At this very moment, tens of thousands of home computers around the world are quietly working together to solve the largest and most basic mysteries of our galaxy. Enthusiastic and inquisitive volunteers from Africa to Australia are donating the computing power of everything from decade-old desktops to sleek new netbooks to help computer researchers and astronomers at Rensselaer Polytechnic Institute map the shape of our Milky Way galaxy.........Go to the Astronomy-blog