Hole in Clouds

At info [at] jpl [dot] nasa [dot] gov May 11th (see www.jpl.nasa,gov/news ) the Herschel Space Observatory has found a gaping hole in clouds surrounding a batch of young stars – providing astronomers with a glimpse into the star forming process. It is alleged. Stars are born obscured by dense clouds of dust and gas so little is actually known about the process – but theories exist. Now it seems there is a hole in the cloud surrounding the latest star birth event – but what might have blown the hole open?