Artemis

 is a black hole badge on Khan Academy. So far the requirements for it are unknown. However, people are looking for clues in the HTML page source to find the requirements. The badge can't be earned at this time. However, a Khan Academy user, now employee, named Peter Collingridge knows how to obtain it but is not showing any details. But he says that it is impossible to earn as of now.

Named After
This badge was named after Artemis, a Greek goddess.She was the great Olympian goddess of hunting, wilderness and wild animals. She was also a goddess of childbirth, and the protectress of the girl child up to the age of marriage.