Match Characters that Occur Zero or More Times ( don't understand the concept )

JavaScript
#1 
et chewieQuote = "Aaaaaaaaaaaaaaaarrrgh!";

let chewieRegex = /Aa*/; // Change this line

let result = chewieQuote.match(chewieRegex);

console.log(result);

Aaaaaaaaaaaaaaaa

Guys please help me out on this… I passed the test but I still don’t get the concept at all. I tried testing it myself by putting only an “A” in there and it returned “A” in the console so i was like “alright… cool” and then i put a SMALL “a” and it returned nothing… this is baffling guys especially as why the answer is “Aa”? I’m so confused can someone pls assist me on this.

#2

That’s weird, you know, you should be using the * character- it’s weird that you can pass this without using that character

Anyway, it is weird also that it doesn’t show anything. result should be Aa with this code

#3

Actually I forgot to put the * symbol infront but yeah i passed with “Aa*” but I don’t understand the concept hence why i made this post
p.s let me edit the post again to put the star

edit: i just didn’t copy and paste the answer here… let me do it above

#4