For #BlackHoleFriday, we're defining "accretion" in a special Goddard Glossary, looking specifically at the role it plays in finding and studying black holes. Music Provided by Universal Production Music: “Wounds” by David Korkis [ASCAP] Video Credit: NASA’s Goddard Space Flight Center Katy Mersmann (NASA/GSFC): Producer This video can be freely shared and downloaded at https://svs.gsfc.nasa.gov/14142. While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: https://svs.gsfc.nasa.gov/14142. For more information on NASA’s media guidelines, visit https://nasa.gov/multimedia/guidelines. If you liked this video, subscribe to the NASA Goddard YouTube channel: null Follow NASA’s Goddard Space Flight Center · Instagram http://www.instagram.com/nasagoddard · Twitter http://twitter.com/NASAGoddard · Twitter http://twitter.com/NASAGoddardPix · Facebook: http://www.facebook.com/NASAGoddard · Flickr http://www.flickr.com/photos/gsfc Video Description: :00 A woman with brown and purple hair in a gray shirt talking and gesturing in front of an illustration of a black hole accretion disk. The disk is a spiral of yellows and oranges with a bright jet of yellow and white emanating from its center. The word accretion is spelled out syllabically in white above the woman’s head. :04 Flying over a river delta, with bright green vegetation broken up by several small blue streams of water. :09 Fade back to the woman talking. :16 Slow push in on an image of a black hole, which looks like a fuzzy glowing orange donut with the lower half glowing a brighter yellow, all against a black background. White text in the top right reads "Credit: EHT." :19 Back to the woman talking. :21 A dark sky glowing faintly brown, speckled with stars. In the lower third, a black hole in space is distorting the stars surrounding it. A bright yellow star is pulled in toward the black hole from the upper left. As it approaches the black hole, it stretches out into a long, ropy beam of light, which orbits around the black hole in a donut shape, expelling puffs of bright yellow light. :31 Back to the woman talking. :36 An animation of a black hole with an accretion disk on a black background. The accretion disk is bright orange material flowing in concentric rings. The far side of the disk appears bent up over the black hole, giving the whole object a shape like an eye. :41 The black hole tips toward the viewer. From the top down, it just looks like a spinning disk of orange and red rings circling the invisible black hole. :51 Fade back to the woman talking in front of the accretion disk.