Not sure if anyone has beaten them since, but a few years back my alma mater came up with the darkest man-made material to date. http://news.rpi.edu/update.do?

Not sure if anyone has beaten them since, but a few years back my alma mater came up with the darkest man-made material to date. http://news.rpi.edu/update.do?artcenterkey=2393 http://news.rpi.edu/update.do?artcenterkey=2393