Black Hole Badges

Yes, there are. If you've been on Khan Academy for a while, you'll know that there was even more then there currently is. There used to be a challenge patch for almost every math section as well, not just only the programming. I have quite a few retired challenge patches, and tons of other retired badges in every single badge section except black hole badges, and I don't think they retire. Also, I don't have even one.

okay

Tesla - earn 10 000 000 energy points

Artemis - master 7500 unique skills (impossible to get)

Atlas - master 5000 unique skills

Is Sal - have infinity energy points (impossible to ause only sal khan has infinity points)

I don't think that Artemis is impossible... I believe that the skills are the practice things with two blocks and a crown on top. Once you get the crown, you've mastered the skill. There are easily 7500 skills on KA. What I find interesting is that while Tesla is pretty much common knowledge to be 10,000,000 energy points, Artemis and Atlas seem to have faded into obscurity. Anybody who knows what Tesla is also knows that Artemis and Atlas are gained by mastering skills, yet nobody seems to be sure on how many skills each one is, just that Artemis has more than Atlas. Has anybody even earned Artemis or Atlas?

The easiest one to get it tesla, But it is hard to get.

Guys I have Kelper Copernicus Sally ride and Magellan.

I have three retired badges.

I have ninety-five retired badges.

This is so hard to get a black hole badge tesla, because that I have about 500,000 energy points!

Yeah, it's crazy. Tesla is super hard, but still the easiest of the three black hole badges!

And also... How on earth did you get a Khanmigo avatar?!?!

I was reading this chat, I also think it is possible to get Artemis. Also, harriet&nathaniel, how do you have a Khanmigo avatar? I'm jealous.

jwtg master 07 no offence  but none of those badges are retired.

Jwtg master 07 did not say those four badges were retired; he just said he had them, along with three other retired badges.

Yes, I see. I misread that when I commented. Thank you for correcting me, and my appologies to Jwtg master 07.

Tesla - earn 10 000 000 energy points

Artemis - master 7500 unique skills (impossible to get)

Atlas - master 5000 unique skills

Is Sal - have infinity energy points (impossible to ause only sal khan has infinity points)

sorry for copying this, I was just bored :p

Actually, the only one we know for sure is Tesla, because people have actually gotten it. Artemis and Atlas are still under debate. And Is Sal is not infinity energy points; it's completely unattainable, Sal just gave it to himself.

Technically, we cannot scientifically disprove that "Is Sal" is attained by having infinity energy points, because Sal is the only one who has it and is the only one who has infinity energy points, and he also won't tell us anything about the badge.

Also, the Khan team confirmed the methods of attaining Artemis and Atlas, so unless they lied to us, (which they've never done before, just refused to tell us things), Artemis is in fact attained by mastering 7,500 skills and Atlas by mastering 5000 skills.

I stand corrected about Artemis and Atlas. I did not know that the Khan Team had confirmed them. However, I am fairly sure that Is Sal is completely unattainable, and furthermore, that Sal does not actually have infinity energy points, and here is why:

FYI, my explanation involves the coding term "string". This just means a group of Unicode characters (e.g. numbers, letters, and symbols).

Think about it; all the KA users have an entry in the KA database that holds their stats, progress, and programs. These stats include their energy points. The energy points are stored as a number, rather than a string; this is simply because it is more convenient to perform math operations directly on a number entry, instead of converting a string entry into a number, doing the math operations, and then converting it back into a string. However, it is physically impossible to store infinity as a database number; it would, by definition, require infinite memory, so this means that if Sal's entry follows the same guidelines as conventional KA users, it is impossible for Sal to actually have infinite energy points.

If this is the case, then Sal must instead have one of two things happen:

1. On Sal's profile, when it tries to write his energy points, KA overrides it and writes infinity instead. This would be pretty easy; it would only take a few lines of code. And as for the Is Sal badge, it's probably unattainable, and Sal just overrode it and gave it to himself.
2. In the database, Sal's energy point number is stored as a string instead of a number, so it becomes possible for him to have infinite energy points. However, this takes a bit more code; you'd have to add code to every place that uses energy point numbers to specify special operations if Sal triggers them. This will take a good deal more work, and is pretty messy, but is possible.

Of the two, option 1 is more easy and clean (coding-wise), so is probably the one that Sal chose to go with. However, option 2 is possible, so it is not set in stone that Sal does not have infinite energy points; it's just highly unlikely.

I agree that Sal's energy points cannot litterally be infinite, however I would argue perhaps his energy points are simply stored as the symbol for infinity, sort of like in some video games that use infinity for example. He cannot have the true form of infinity for his energy points obviously, but he can have the mathematical representation of it. We know that computers are capable of reading code containig the infinity symbol, as calculators used for advanced mathematics do it all the time, so I beleive this is the most likely reason. It is, of course, not only possible but likely that we are both wrong simply due to the fact that Sal controls the site, and there are hundreds of methods that he could employ to make his energy points appear as infinity. I suppose there is no way we can ever be completely certain, but I do enjoy the debate.

That is completely true, except for one point. The infinity symbol is not technically a number; it would have to be stored as text, and therefore cannot have mathematical operations performed on it. Calculators that use infinity do not actually have the number infinity; they just have some very clever programming that simulates what infinity is supposed to do.

Thank you for correcting me, I'm not as familiar with code as you appear to be, however I beleive my point still stands; regardless of the infinity being represented as a number or as a clever string of code

Sorry, I clicked submit by msistake sentence; I'll just continue where I left off: ,the point is that in some way computers are able to interpret infinity in some way, and hence they can display it.

Yeah, some computers even just say that an arbitrary number is infinity if it's large enough.

Sal has the Sal badge because he is Sal Khan I did some research and I found out.

Sal has the Sal badge because he is Sal Khan I did some research and I found out.

Fun Fact! Some of the black holes badges name’s are in real life like Tesla made by Elon Musk & Artemis for National aeronautics space administration’s Artemis moon mission & Atlas for the Atlas series of rockets made by ULA!

Cool! Some other fun facts about those badges:

Tesla was a real man, he was a brilliant scientist who made enormous discoveries about and amazing inventions with electricity.

Artemis and Atlas are characters in greek mythology. Artemis was the greek god of the hunt and archery, and Atlas held up the sky as punishment for something.

Yo! Kinda late to the chat, but there are currently 6 Black Hole Badges. These are:

Tesla- Easiest to obtain, reach 10 million Energy Points. This would have been pretty easy had not KA retired all those Energy Point farming badges like 299792458 m/s lol.

Atlas- Achieve mastery in 5000 (was 500) unique skills. Finally possible, as there are now slightly over 5000 skills in KA. Still extremely hard though.

Artemis- Achieve mastery in 7500 (was 750) unique skills. Still impossible.

Galileo (hidden)- Create 3000 (was 2000) videos. Only Sal Khan currently has this achievement to my knowledge, but some other devs are getting close.

Herculean (hidden)- Achieve proficiency in all KA skills to date. Near impossible, as there are just over 5000 skills in KA right now, but if you really tried, you could get it.

Is Sal (hidden)- Be Sal Khan. This always seemed unfair to me. It's literally impossible to get. Thankfully if you somehow got the other 5, you could stock your showcase full of BH badges without needing this one. Also, rumor has it that this badge gives 100 million Energy Points, automatically awarding Tesla to Sal as well.

That's all the Black Hole Badges I know of. Let me know if they've added any more!