Thread:HMcCoy/@comment-26239735-20140817053243

Mostly, when someone wants to figure out what black hole badges are for, they search for: How to get the Black Hole badges on Khan Academy. The first link is of PCs website.

And the first of the wiki is http://khanacademy.wikia.com/wiki/Category:Black_Hole_Badges

So I purposely add the line(below). By this, ours may be the top result soon.

How to get the Black Hole Badges on Khan Academy
 