K-Pop band BTS just won two Billboard Music Awards: top duo/group and social artist.

The seven-member band is the first K-Pop group to ever top the U.S. album charts.

If you haven't heard of BTS, it's time to get familiar—because the band is on the verge of taking over the music world.

The fact that they are the first K-Pop band to ever top the U.S. album charts, according to BBC, is evidence enough of their star power. But they're Billboard awards are only further proof that this boy band's star is rising.

So if you've been hearing teenage girls everywhere screaming about BTS and—like many of us!—you're wondering "who is BTS?!"—here's everything you need to know about the group.

What does BTS stand for?

BTS came together in 2013 and took their name from the Korean expression Bangtan Sonyeondan, which translates to Bulletproof Boy Scouts. In 2017, they announced, for English speakers, their acronym would be changing to stand for "Beyond the Scene."

BigHit Entertainment, their agency, told Korean media the new branding "symbolizes youth who don't settle for their current reality and instead open the door and go forward to achieve growth," according to Billboard.

Who are the BTS members?

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The band consists of seven members:

RM (previously Rap Monster)/ Kim Nam Joon

(previously Rap Monster)/ Kim Nam Joon Jungkook / Jeon Jeong-guk

/ Jeon Jeong-guk Jin / Kim Seok Jin

/ Kim Seok Jin Suga / Min Yoon Gi

/ Min Yoon Gi J-Hope / Jung Ho Seok

/ Jung Ho Seok Jimin / Park Ji Min

/ Park Ji Min V/ Kim Tae Hyung

One thing that sets this group apart from others is their focus on more serious topics like mental health. In September 2018, BTS became the first K-pop group to speak in front of the United Nations. Their "Love Myself" campaign, which launched in partnership with UNICEF, focused on preventing youth violence and global education.

"Tell me your story. I want to hear your voice, and I want to hear your conviction," RM said during their address. "No matter who you are, where you're from, your skin color, gender identity: speak yourself."

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Where is BTS from?

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The boy band formed in Seoul, South Korea. The septet co-writes and produces a lot of their own songs.

How did BTS become famous?

Thanks to their fans—who go by ARMY—BTS can call themselves world record holders. The group has the Guinness World Records for most Twitter engagements, the most viewed YouTube video in 24 hours, and most viewed YouTube music video in 24 hours by a K-pop group, thanks to their hit song with Halsey "Boy With Luv." In 2017 and 2018, they were the most-tweeted celebrities, according to Billboard.

Also in 2017, they beat out Justin Bieber and Selena Gomez to win the Billboard Music Award for Top Social Artists of the Year, and became the first Korean artists to win it.

Both their 2018 albums, " " and " " made it to the no. 1 spot on the Billboard 100 chart. It was the first time that has happened since One Direction in 2014.

What is BTS's biggest song?

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Despite having big hits from their "Love Yourself" trilogy albums like " ," it looks like BTS's new single with Halsey "Boy With Luv" might be their most popular yet—in the U.S. at least. The music video already broke three world records, as previously mentioned.

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Three new records - congratulations @BTS_twt 👉 https://t.co/Ll7a3ctFjH

👏 Most viewed @YouTube video in 24 hours

👏 Most viewed @YouTube music video in 24 hours

👏 Most viewed @YouTube music video in 24 hours by a K-pop group#BoyWithLuv — GuinnessWorldRecords (@GWR) April 18, 2019

Fans got to enjoy the world premiere of the song at the 2019 Billboard Music Awards.

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And they certainly couldn't hide their excitement on Twitter:

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THE WAY THEY LOOKED SO HAPPY AND JUMPING WITH SO MUCH JOY MAKES ME WANT TO WIN ALL THE AWARDS IN THE WORLD FOR THEM. AHHH, THESE BABIES.#BTSTopGroup#BTSTopSocialArtist#BillboardMusicAwards#BTSpic.twitter.com/YXerUL6TTz — ; STREAM DYNAMITE ⁷ ; ✨💜 (@BeThemStars07) May 2, 2019

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