Wednesday, 7th December 2011
How to get black hole badges on Khan Academy
The Black Hole badges are Khan Academy are legendary and unknown, so a lot of people want to know how to get them. The code describing what they are for used to be available here, but that code is out-dated and says that the Atlas badge is for completing 150 exercises.
What Black Hole badges are there?
In addition to the three unknown badges, there are a couple of unique badges that only Sal has, and only Sal can get:
- Is Sal - Which you can only get if you are Sal.
- Galileo - Make 3000 videos.
Of all the black hole badges, the most attainable is Tesla. This badge is awarded for getting 10 million energy points. A few people have got this (here, here and here). I think they did this using a process of maximising energy points by getting questions wrong, a tactic that no longer works. But there are enough videos and exercises that it is possible to get this badge without cheating. This video show when I got the Tesla badge:
The Atlas badge is the most changeable of badges, always moving out of reach (except for the one time Ben Eater, lead exercise developer on Khan Academy got it by mistake). It was once for completing 150 exercises, then 250 and then 500. Now it has changed again, to another unattainable number. I suspect that when Khan Academy feels there are enough exercises to cover all of high school maths (or maybe one topic), then they will settle on a number. But for now it is not possible.
That leaves the latest badge, Artemis. Now I'm employeed by Khan Academy I feel it would be wrong of me to reveal its secrets. I will only say that, like Atlas, it is currently not possible to get this badge.