Interstellar medium. Pseudo-three-dimensional maps of the diffuse interstellar band at 862 nm. by Kos, J, Zwitter, T, Wyse, R, Bienaymé, O, Binney, J, Bland-Hawthorn, J, Freeman, K, Gibson, B, Gilmore, G, Grebel, E, Helmi, A, Kordopatis, G, Munari, U, Navarro, J, Parker, Q, Reid, W, Seabroke, G, Sharma, S, Siebert, A, Siviero, A, Steinmetz, M, Watson, F, Williams, M

“…Understanding their origin in the interstellar medium is one of the oldest problems in astronomical spectroscopy, as DIBs have been known since 1922. …”