A group of seven le-jin-dary memes

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

BTS stands for Bangtan Boys. A Korean boy band. There are 7 members.
Leader: Rapmon/ Kim Nam-joon
Visual/Vocalist: Jin/ Kim Seokjin
Rapper: Suga/ Min Yoongi
Dancer/Rapper: J-Hope/ Jung Hoseok
Dancer/Main Vocalist: Jimin/ Park Jimin
Vocalist: V/ Kim Taehyung
Dancer/ Main Vocalist: Jungkook/ Jeon Jungkook

Stands for Bangtan Sonyeondan, which literally translates into the Bulletproof Boy Scouts. A 7 member Korean pop band better known as the Bangtan boys. They specialize in some of the best Korean rapping, the most beautiful singing voices, hardcore choreography that puts others to shame and just looking exceptionally hot.

Featuring:

Jin- The oldest member, real name Kim Seokjin. He is fabulous and loves pink.

Suga- The rapper with swag, real name Min Yoongi. Solo name is Agust D with that tongue technology.
J-Hope- Main dancer, real name Jung Hoseok. Usually seen acting cute for the cameras. His rapping is spectacular.
Rap Monster- Main rapper and composer, real name Kim Namjoon. Known to be insightful.

Jimin- The second lead dancer, Park Jimin. He is the hottest thing you will ever see. His voice is like angels descending from above.

V- The deepest-voiced singer, real name Kim Taehyung. He is aegyo king and the most appreciative towards fans.

Jungkook- The youngest member and a beautiful singer, Jeon Jungkook. He is a tease and loves to show off his stripper kick in the latest comeback Blood Sweat and Tears.

A South Korean pop band. Short for Bantang Sonyeondan (lit Bulletproof Boy Scouts). Has seven members:

Seok Jin (Jin)
Yoon Gi (Suga)
Ho Soek (J-Hope)
Nam Joon (Rap Monster)

Ji Min
Tae Hyung (V)
Jung Kook

Stands for 방탄소년단 (BangtanSonyeondan) which means Bulletproof Boy Scouts
It's Korean Music group made of 7 members. They debuted in July 2013.
I suggest watching their Blood Sweat&Tears Music Video! :)

1. Kpop group with 7 members.

2. Behind the scenes.

3. Back to school.

4. Burn that shit.