Sun has gone blank twice this month, this is what it meanshttp://www.news.com.au/technology/science/space/the-sun-has-gone-blank-twice-this-month-this-is-what-it-means/news-story/d775ecf894ab68415ed0108ced31a4e2 by esalazar • 10 years ago 16 3 10 years agoNEnews.com.au