https://www.nasa.gov/image-article/1a-milky-way-galaxy-black-hole-circumnuclear-ring-sofia/
1a. Milky Way Galaxy Black Hole Circumnuclear Ring - SOFIA - NASA
SOFIA/FORCAST mid-infrared image of the Milky Way Galaxy's nucleus showing the Circumnuclear Ring (CNR) of gas and dust clouds orbiting a central supermassive...
milky way galaxyblack holeringsofianasa
https://esahubble.org/images/heic0102b/
Star Clusters and Circumnuclear Ring in the Centre of NGC 2903 (NICMOS) | ESA/Hubble
Star Clusters and Circumnuclear Ring in the Centre of NGC 2903 (NICMOS)
https://arxiv.org/abs/1706.05762
[1706.05762] Disentangling the Circumnuclear Environs of Centaurus A: III. An Inner Molecular Ring,...
Abstract page for arXiv paper 1706.05762: Disentangling the Circumnuclear Environs of Centaurus A: III. An Inner Molecular Ring, Nuclear Shocks and the CO to...