At the center of our galaxy, a supermassive black hole churns. Learn about the types of black holes, how they form, and how scientists discovered these invisible, yet extraordinary objects in our universe. ➡ Subscribe: http://bit.ly/NatGeoSubscribe #NationalGeographic #BlackHoles #Educational About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta Read more at "Black Holes 101" https://on.natgeo.com/2Q7SykY Black Holes 101 | National Geographic https://www.youtube.com/watch?v=kOEDG3j1bjs National Geographic null