We are pleased to present the Topical Collection “Unexplained Spectral Phenomena in the ISM”, with Guest Editor Prof. Sun Kwok. It is focused on the investigation of spectral phenomena, that even though are pervasively observed in a range of astrophysical environments, remained unidentified after decades of observations. The understanding of diffuse interstellar bands (DIBs) and other spectral features remain some of the key challenges to explain the signature of organic materials in the interstellar medium.
As a Hybrid Journal, we are glad to offer authors two routes for publishing your manuscript.
The Editors-in-Chief welcome original contributions to Astrophysics and Space Science covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology.